1. Getting Started
1.1 Packing List
Upon unboxing your KOSPET TANK T4/M4 Smart Watch, please ensure all items are present:
- Smartwatch (including strap)
- Magnetic charging dock (including cable)
- User manual

Image: KOSPET TANK T4/M4 Smart Watch, magnetic charging dock, strap, and user manual.
1.2 About the Watch
Familiarize yourself with the watch's physical components and their functions:

Image: Front and back view of the KOSPET TANK T4/M4 Smart Watch highlighting buttons, heart rate sensor, and charging port.
| No. | Component | Function |
|---|---|---|
| 1 | UP button | Press once to scroll up through options. |
| 2 | DOWN button | Press once to scroll down through options. |
| 3 | SEL button | Press and hold to power on/off. Press once to enter App list / return to home screen. |
| 4 | BACK button | Used to count laps / return to other pages. |
| 5 | Heart rate sensor | Monitors heart rate and other health metrics. |
| 6 | Charging port | Connects to the magnetic charging dock for power. |
1.3 App Download and Installation
To unlock the full potential of your smartwatch, download the Apexmove App. This app provides health and fitness data insights and allows for customized settings.
Method 1: Scan QR Code
Scan the QR code below using your smartphone's camera to download and install the Apexmove App.


Image: QR code for Apexmove App and Apexmove App icon with App Store and Google Play logos.
Method 2: Search App Store
Search for "Apexmove" in the Apple App Store or Google Play Store to download and install the App.
1.4 App Registration and Login
- The App will request necessary permissions on your phone. These permissions are used to enhance your user experience and ensure the absolute security of your information.
- To fully experience all features of the smartwatch, register and log into your account before using the App and grant all necessary permissions.
1.5 Pairing and Connection
Connect your KOSPET TANK T4/M4 Smart Watch to the Apexmove App:
Method 1: Scan QR Code on Watch
- Press and hold the SEL button for 3 seconds to power on the watch. Select your preferred language and navigate to the QR code interface on the watch.
- Open the Apexmove App on your phone and go to My > My Device.
- Select the scanning icon within the App and scan the QR code displayed on your watch to complete the pairing process.

Image: Illustration of scanning a QR code on the smartwatch screen using the Apexmove app for pairing.
Method 2: Manual Device Selection
- Press and hold the SEL button for 3 seconds to power on the watch.
- Open the Apexmove App on your phone and go to My > My Device.
- Select the Add Device icon, find "KOSPET TANK T4/M4" from the list of nearby devices, and tap to pair.
1.6 BT Calling Setup
To enable Bluetooth calling functionality:
- After connecting the watch to the Apexmove App, tap "Pair" within the App to enable BT calling.
- If pairing with an Android phone, confirm BT pairing on the watch when prompted.
- Ensure Bluetooth is enabled on your watch for the BT calling feature to function correctly.
1.7 OTA Update
Before using your watch, it is recommended to update to the latest firmware version. Open the Apexmove App and navigate to My > My Device > Firmware Update to download and install any available updates.
2. Operating Your Smart Watch
2.1 Gesture Operations
Navigate your KOSPET TANK T4/M4 using intuitive touch gestures:
- Swipe Down: From the home screen, swipe down to access the Control Center for quick settings and customizable features.
- Swipe Up: From the home screen, swipe up to access Shortcut Cards for frequently used functions.
- Swipe Right: From the home screen, swipe right to view unread notifications.
- Swipe Left: From the home screen, swipe left to enter the App List.

Image: Diagrams illustrating swipe gestures for Control Center, Shortcut Cards, Notifications, and App List.
2.2 Professional Sports Algorithms & Modes
The KOSPET TANK T4/M4 features 23 professional sports algorithms and 160 freestyle training modes, providing scientific data for various activities. High-precision motion sensors capture multi-dimensional data in real-time to analyze your performance.

Image: Smartwatch displaying sports modes like Outdoor Running, Outdoor Walking, Snowboarding, Road Cycling, Elliptical Trainer, and Rowing Machine.
2.3 Diving Algorithm
Equipped with a professional diving algorithm, the watch supports freediving, scuba diving, and gauge diving. It tracks depth, temperature, ascent/descent speed, and no-decompression limits in real-time for your safety.

Image: A diver wearing the KOSPET TANK T4/M4 Smart Watch, which displays underwater time, depth, and temperature.
To select a diving mode, enter the watch's workout list. Before scuba diving, ensure all relevant parameters are set up. For safety, always dive with an experienced buddy and consult a doctor about your physical condition.
2.4 Training Plans
Create personalized training plans within the Apexmove App. Once synced, you can start your training programs directly on the watch and monitor your progress towards your fitness goals.
2.5 Local Music and Wireless BT Earphones
Transfer music to your watch via the Apexmove App or by connecting the watch to a computer with a USB cable. You can then listen to local music during workouts by pairing Bluetooth earphones or directly through the watch's speaker.
2.6 Exploration and Navigation Features
The watch supports advanced navigation capabilities:
- Create Routes: Use the Apexmove App to create custom location points and routes.
- Sync for Navigation: Sync these routes and points to your watch for navigation.
- Start Navigation: On the watch, enter the navigation or workout page and select a route or location point to begin navigation.

Image: A smartphone displaying route creation in the Apexmove app, and the smartwatch showing a map with a tracked route.
2.7 Offline Map Feature
Utilize offline maps for navigation without an internet connection:
- Visit https://support.kospet.com/map-download on a computer or tablet to access the map download page.
- Search for your desired region, click "Download," and wait for the file to complete. Extract the downloaded ZIP file to get a folder named after the region.
- Connect your watch to the charging dock, then connect the dock to a computer or tablet via a USB cable. Copy the extracted map folder to the "Map" directory on your watch to import the map files.
3. Maintenance and Care
3.1 Cleaning and Maintenance After Water Activities
After activities involving water (e.g., swimming, surfing), gently shake the watch to remove residual water from the holes in the watch case. Wipe the watch body and strap with a soft cloth dampened with clean water. Allow them to dry completely before wearing the watch again to prevent salt deposits that could affect its normal function.
3.2 Cleaning Tips After Workouts
After intense physical activities (e.g., running, hiking, cycling), sweat and acidic residues may accumulate on the watch. Rinse the watch with clean water and dry it promptly to minimize long-term corrosion and maintain hygiene.
3.3 Cleaning Precautions
- Do not use soap, hand sanitizer, shampoo, or other harsh chemicals to clean the watch. These substances can cause skin irritation or component damage due to residues.
- Device defects or damage caused by improper cleaning or chemical exposure are not covered under warranty.
3.4 Usage Environment Precautions
To maintain the watch's water resistance and overall durability, avoid exposing it to the following conditions:
- High-temperature environments (e.g., saunas, hot showers).
- Strong corrosive liquids or UV/radiation exposure.
Note: Prolonged exposure to extreme conditions accelerates gasket deterioration, which may lead to water ingress.
4. Troubleshooting
If you encounter issues with your KOSPET TANK T4/M4 Smart Watch, consider the following common solutions:
- Connectivity Issues: Ensure Bluetooth is enabled on both your watch and smartphone. Try restarting both devices and re-pairing them through the Apexmove App.
- App Sync Problems: Verify that the Apexmove App has all necessary permissions granted on your phone. Check for app updates and ensure your watch firmware is up to date.
- Battery Life Concerns: Battery life can vary based on usage (e.g., continuous GPS, AOD mode, heavy use of features). Refer to the specifications for expected battery performance under different conditions.
- Water Resistance: While the watch is highly water-resistant (10ATM & IP69K), avoid exposure to hot water, saunas, or high humidity, as this can compromise the seals over time.
- Missing Features: The KOSPET TANK T4/M4 is designed for rugged outdoor use and comprehensive fitness tracking. Features like NFC or ECG are not included in this model. Please refer to the product specifications for a complete list of supported functionalities.
5. Specifications
The KOSPET TANK T4/M4 Smart Watch is engineered for durability and performance, featuring military-grade toughness and advanced tracking capabilities.
Video: KOSPET TANK T4/M4 Smart Watch product overview, showcasing its rugged design, health sensors, GPS, sports modes, and water resistance.
5.1 General Specifications
| Feature | Detail |
|---|---|
| Brand Name | KOSPET |
| Model | TANK M4 (also referred to as T4) |
| Category | Smart Watches |
| Application Age Group | Men |
| Style | SPORT |
| Origin | Mainland China |
| Certification | CE, FCC, RoHS, KC |
| Launch Date | 2025 |
| Weight | 77g |
| Dimensions (without sensor base) | 48.6*48.6*13.7mm |
5.2 Display & Hardware
| Feature | Detail |
|---|---|
| Display Size | 1.43 inches |
| Resolution | 466*466 |
| Screen Material | AMOLED |
| Dial Window Material Type | Hardlex (Corning Gorilla Glass 3) |
| Screen Shape | SQUARE |
| Touch Screen | Yes |
| Peak Brightness | Up to 1,000 nits |
| Auto-brightness | Support |
| CPU Model | ATS3089 |
| ROM | 32 GB |
| RAM | <128MB |
| System | Watch OS (Apexmove OS) |
| APP Download Available | Yes (Apexmove App) |
| Voice assistant built-in | Yes |
| Speaker | Support |
| Mic | Support |
| Motor | Support |
| WIFI | No |
| SIM Card Available | No |
| Network Mode | None |
| Rear Camera | None |
5.3 Connectivity & Sensors
| Feature | Detail |
|---|---|
| Bluetooth-compatible Version | 5.3 (BT V5.3) |
| GPS | Yes (Dual-band, 6 satellite positioning systems: BeiDou, GPS, GLONASS, GALILEO, QZSS, NavIC) |
| Dual-band (L1+L5) | Support |
| Offline Maps | Support (Topographic maps, Contour maps) |
| Health Sensor | VC9213-4PD sensor (supports blood-oxygen) |
| Movement Sensors | 6-axis gyroscope sensor, Geomagnetic sensor, Barometric altimeter, Ambient light sensor, Temperature sensor |
5.4 Battery & Charging
| Feature | Detail |
|---|---|
| Battery Capacity | 500mAh (>450mAh) |
| Battery Type | Pure cobalt battery |
| Battery Detachable | No |
| Theoretical Charging Duration | Approx. 2 hours |
| Charging Method | Magnetic charging base |
| Typical Use Battery Life | Up to 14-15 days |
| Heavy Use Battery Life | Up to 9-10 days |
| AOD Mode Battery Life | Up to 5-6 days |
| Continuous GPS Usage Battery Life | Up to 21-22 hours |
5.5 Durability & Materials
| Feature | Detail |
|---|---|
| Waterproof Grade | 10ATM & IP69K Waterproof (100m & up) |
| Body Material | Bezel: Stainless Steel, Case: Stainless Steel, Back panel: Stainless Steel, Cover glass: Corning Gorilla Glass 3 |
| Case Material | Steel |
| Band Material | Silica Gel (Liquid silicone) |
| Band Width | 22mm |
| Buckle Material | Stainless steel |
| Min. & Max. Wrist Dimensions | 150-240mm |
| Removable Strap | Support |
5.6 Software & Features
| Feature | Detail |
|---|---|
| Compatibility | All Compatible (Android 7.0 and above, iOS 14.0 and above) |
| Language | English (default), German, Spanish, French, Italian, Portuguese, Russian, Dutch, Czech, Hebrew, Hungarian, Romanian, Finnish, Persian, Swedish, Danish, Greek, Polish, Ukrainian, Norwegian, Croatian, Serbian, Arabic, Turkish, Korean, Japanese, Malaysian, Filipino, Belarusian, Bengali, Indonesian, Thai, Vietnamese, Khmer, Urdu, Simplified Chinese, Traditional Chinese |
| Metrics measured | Heart Rate Monitor, Women's Health Monitoring, Blood Oxygen Monitor, Sleep Monitor |
| Activity Tracked | Other, Steps Tracker, Distance Tracker, Calorie Tracker, Activity Tracker |
| Sports Modes | 183 (including 23 ApexMotion sports modes and 160 Freestyle training modes) |
| Smart Recognition | 6 sports movements (Walking, Running, Cycling, Elliptical trainer, Rowing machine, Still) |
| Dive Modes Support | 3 (Freedive, Scuba dive, Gauge) |
| Sync to 3rd Party Fitness Apps | For iOS: Apple Health, Strava; For Android: Samsung Health, Google Fit, Strava |
| Manual Measurements | Heart rate, Blood oxygen saturation, Stress level, Mood, One-tap measurement |
| 24H Monitoring | Heart rate, Blood oxygen saturation, Stress level, Mood |
| Sleep Tracking | Sleep stages (including REM), Daytime naps |
| Health Alerts | Abnormally high & low heart rate, Low blood oxygen level |
| Other Health Features | Menstrual cycle tracking, Breathing exercise |
| Real-time Navigation | Support |
| Route Import | Support |
| Compass | Support |
| Walkie-talkie | Support |
| BT Phone Music Control | Support |
| Phone Call Notifications | Support |
| BT Phone Camera Control | Support |
| Call Quick Reply | (For Android Only) |
| SMS Notifications | Support |
| App Notifications | Support |
| Music Storage | Support |
| Flashlight | Support |
5.7 Technical Specifications (Wireless)
| Model | Frequency | Power (EIRP) |
|---|---|---|
| T4 | 2402-2480MHz (BeiDou, GPS, GLONASS, GALILEO, QZSS, NavIC) | BT: 2.02 dBm, BLE: 1.93 dBm |
| M4 | 2402-2480MHz (BeiDou, GPS, GLONASS, GALILEO, QZSS, NavIC) | BT: 3.23 dBm, BLE: 3.13 dBm |
6. Warranty and Support
6.1 Warranty Policy
For products purchased from the KOSPET official online store, please visit http://www.kospet.com/pages/warranty-policy for detailed warranty information.
If you have further questions, feel free to contact KOSPET support:
- Email: support@kospet.com
- Call: +1 (507) 668-8466 (Service hours: Monday to Friday, 9:00 AM – 6:00 PM EST)
For purchases made on Amazon, please contact: smartwatch.amz@gmail.com.
6.2 Important Notice (FCC Compliance)
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.
6.3 Manufacturer Information
Manufacturer: Shenzhen Amazwear Technology Co., Ltd.
Address: 34/F, Changjiang Center, Intersection of Renmin Road and Jianshe Road, Jingxin Community, Longhua Subdistrict, Longhua District, Shenzhen, Guangdong, China
MADE IN CHINA
This user manual is published by KOSPET. The company reserves the right of final interpretation and may make adjustments to this manual anytime if necessary. Please refer to the latest version published on the KOSPET official website. Feature descriptions on the foregoing pages are provided for reference only.
7. User Tips
- Optimal Charging: Always use the original KOSPET charger and a power adapter with an output current of 500mA or higher. Ensure the charger and watch are dry and clean before charging.
- App Permissions: For full functionality, ensure the Apexmove App has all necessary permissions on your smartphone. This is crucial for data syncing and feature access.
- Firmware Updates: Regularly check for and install firmware updates via the Apexmove App to ensure your watch has the latest features and performance improvements.
- Health Monitoring Accuracy: The watch provides comprehensive health monitoring data for reference. It is not a professional medical device and should not be used for medical diagnosis.
- Diving Safety: When using dive modes, always prioritize safety. Dive with an experienced buddy and consult a medical professional regarding your physical condition before engaging in diving activities.