Introduction
The Wee'Plug SB-18 Activity Tracker is designed to help you monitor your daily activities and health metrics. This device features precise heart rate and blood pressure measurement, step and distance tracking, calorie consumption calculation, and sleep cycle monitoring. It also provides notifications for calls and messages, and customizable reminders. Compatible with both iOS and Android devices, the SB-18 offers a comprehensive overview of your fitness journey.
Safety Information
- Consult your doctor before starting any new exercise program, especially if you have pre-existing health conditions.
- This device is not a medical device and should not be used to diagnose or treat any medical condition.
- Keep the device away from extreme temperatures and direct sunlight.
- Do not attempt to disassemble or repair the device yourself.
- Keep out of reach of children.
- Avoid prolonged contact with moisture to prevent damage, despite its water resistance.
Package Contents
Please check the box for the following items:
- Wee'Plug SB-18 Activity Tracker
- User Manual
Product Overview
The Wee'Plug SB-18 features a sleek design with an OLED display and a touch-sensitive button for navigation. The display supports both horizontal and vertical orientation. The back of the device houses the optical sensor for heart rate and blood pressure measurements.



Setup
1. Charging the Device
Before first use, fully charge your Wee'Plug SB-18. The device has an integrated USB charging port. Gently pull the strap to reveal the USB connector and plug it into any standard USB port (e.g., computer, USB wall adapter). A full charge typically takes 1-2 hours.
2. Downloading the App
To unlock the full potential of your activity tracker, download the companion application. Search for the official Wee'Plug app on the App Store (iOS 7 or higher) or Google Play Store (Android 4.3 or higher). Install the app on your smartphone.
3. Pairing with Your Smartphone
- Ensure Bluetooth is enabled on your smartphone.
- Open the Wee'Plug application.
- Follow the on-screen instructions to create an account or log in.
- Navigate to the device pairing section within the app.
- The app will search for available devices. Select "SB-18" from the list.
- Confirm the pairing request on both your phone and the tracker if prompted.
- Once paired, the time and date on your tracker will automatically synchronize with your phone.
Operating Instructions
Basic Navigation
The SB-18 features a single touch-sensitive button located below the display. Tap the button to cycle through different display modes (time, steps, distance, calories, heart rate, blood pressure). A long press may activate certain functions or enter sub-menus, depending on the current mode.
Activity Tracking
- Steps, Distance, Calories: The tracker automatically records your daily steps, calculates the distance covered, and estimates calories burned based on your profile information. View these metrics by tapping the touch button.
- Heart Rate and Blood Pressure: To measure your heart rate or blood pressure, navigate to the respective screen on the tracker. Ensure the device is worn snugly on your wrist. The optical sensor on the back will emit a green light during measurement. Remain still during the process for accurate readings.

- Sleep Monitoring: Wear the tracker to bed, and it will automatically monitor your sleep cycle, recording deep sleep, light sleep, and awake times. Review your sleep quality data in the companion app.
- Notifications: Once paired, the tracker will vibrate and display notifications for incoming calls and messages (SMS, social media apps). The caller ID or message content will be shown on the screen.
- Reminders: Set custom reminders through the app for various purposes, such as drinking water, taking medication, or attending meetings. The tracker will vibrate at the scheduled times.
- Data Synchronization: Your activity data is automatically synchronized with the app when your tracker is connected via Bluetooth. You can view historical results and detailed reports within the app.
Maintenance
- Cleaning: Wipe the device regularly with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Water and Dust Resistance: The SB-18 is resistant to water and dust (waterproof). It is suitable for daily use and can withstand splashes or brief immersion. However, it is not recommended for swimming or showering.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device when the battery level is low. If storing the device for an extended period, charge it to about 50% and store it in a cool, dry place.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Device does not turn on. | Ensure the device is fully charged. Connect it to a USB power source for at least 30 minutes. |
| Cannot pair with smartphone. |
|
| Inaccurate heart rate/blood pressure readings. |
|
| Notifications are not received. |
|
Specifications
| Model | SB-18 |
| Display | 0.86'' OLED |
| Connectivity | Bluetooth 4.0 |
| Battery Capacity | 80 mAh |
| Battery Life | Up to 5 days (typical use) |
| Dimensions | 225 x 20 x 13 mm |
| Weight | 30 g |
| Compatibility | iOS 7 or higher, Android 4.3 or higher |
| Water & Dust Resistance | Yes (Waterproof, suitable for daily use, not for swimming/showering) |
| Material | Plastic |
| Features | Heart Rate Monitor, Blood Pressure Monitor, Step Counter, Distance Tracker, Calorie Counter, Sleep Monitor, Call/Message Notifications, Customizable Reminders |
Warranty and Support
Wee'Plug products are designed and manufactured to the highest quality standards. For information regarding warranty coverage and customer support, please refer to the warranty card included with your product or visit the official Wee'Plug website. If you encounter any issues not covered in this manual, please contact Wee'Plug customer service for assistance.