Introduction
Thank you for choosing the SHIQSUN SQ-8500 20W High-Power Walkie Talkie. This device is designed for reliable communication with advanced features such as AI Noise Reduction, a powerful flashlight with strobe lights, and reverse charging capability. It operates on VHF and UHF dual bands, making it suitable for various professional and recreational uses. Please read this manual thoroughly before operating the device to ensure safe and optimal performance.
1. Setup
1.1 Package Contents
Upon unboxing, please verify that all items listed below are included in your package:

Image: Standard package contents including the radio, antenna, sling, belt clip, battery, base charger, manual, and box.
- SQ-8500 Walkie Talkie Unit
- Antenna
- 5800mAh Li-ion Battery
- Base Charger
- USB Type-C Charging Cable
- Sling
- Belt Clip
- User Manual (this document)
1.2 Device Overview
Familiarize yourself with the various components and controls of your SQ-8500 Walkie Talkie:

Image: Detailed diagram of the walkie talkie with numbered labels for each component.
- Antenna
- Alarm Button
- PTT 1 (Push-to-Talk 1)
- PTT 2 (Push-to-Talk 2)
- AI Noise Reduction / Radio Button
- Torch/Flashlight
- Channel Selector
- On/Off/Volume Knob
- Indicator Light
- 1.77-inch Screen
- Universal K-type Earpiece Port
- Microphone
- Speaker
- Belt Clip Screw Hole
- Output Charging Button
- Battery Removal Screw
- USB Port (for reverse charging)
- Type-C Charging Port
- Torch/Flashlight (front)
1.3 Battery Installation and Charging
The SQ-8500 comes with a 5800mAh Li-ion battery. Ensure it is properly installed and charged before first use.
Battery Installation:
- Align the battery with the back of the walkie talkie.
- Slide the battery into place until it clicks securely.
- Use the battery removal screw (16) to secure or remove the battery if necessary.
Charging the Battery:
There are two methods to charge your walkie talkie:

Image: Illustration of charging the walkie talkie using either the included base charger or a direct Type-C cable connection.
- Using the Base Charger: Place the walkie talkie into the base charger. The indicator light on the charger will show charging status (Red: Charging, Green: Fully Charged).
- Using Type-C Cable: Connect the provided Type-C charging cable to the Type-C Charging Port (18) on the device and to a compatible USB power source (e.g., wall adapter, computer, power bank).
A full charge typically takes 4-5 hours. Ensure the product power is over 75% for optimal performance.
1.4 Antenna Installation
Attach the high-gain antenna to the top of the walkie talkie by screwing it clockwise into the Antenna port (1) until it is finger-tight. Do not overtighten.

Image: A close-up view demonstrating the installation of the high-gain antenna onto the walkie talkie.
2. Operating Instructions
2.1 Power On/Off and Volume Control
To power on the device, rotate the On/Off/Volume knob (8) clockwise. The screen will light up, displaying the current voltage and then the operating frequencies. To power off, rotate the knob counter-clockwise until it clicks. Adjust the volume by rotating the same knob.
Video: Demonstration of powering on the walkie talkie, showing the screen display and basic operation.
2.2 Basic Communication (PTT)
The SQ-8500 features Dual PTT buttons (3 and 4) for flexible communication. Press and hold the desired PTT button to transmit your voice, and release it to listen. Ensure you are on the correct channel for communication.

Image: Close-up view highlighting the Dual PTT buttons on the side of the walkie talkie.
2.3 AI Noise Reduction
Activate the AI Noise Reduction feature by pressing the dedicated button (5) to enhance audio clarity in noisy environments. This feature significantly reduces background interference for clearer communication.

Image: Visual representation of AI Noise Reduction, showing a waveform before and after processing, and a hand activating the feature on the device.
2.4 Flashlight and Strobe Lights
The walkie talkie is equipped with a powerful flashlight (6, 19) and red/blue strobe lights for various situations. Two lighting modes can be switched freely according to usage needs: SOS Mode and Bright Light Mode.

Image: The walkie talkie demonstrating its powerful flashlight and red/blue strobe light functions, useful for emergencies or low-light conditions.
To activate the flashlight and cycle through modes (Bright, Red Strobe, Blue Strobe, SOS), press the dedicated flashlight button (6). To turn off, cycle through all modes or long-press the button.
2.5 Reverse Charging (Power Bank Function)
The SQ-8500 can function as a power bank to charge other devices. Open the protective cover for the USB port (17) and connect your device using a compatible USB cable. Press the Output Charging Button (15) to initiate charging. The walkie talkie's 5800mAh battery can provide emergency power for mobile phones, earphones, tablets, and other small electronics.

Image: A visual guide demonstrating how to use the walkie talkie's reverse charging feature to power a smartphone.
Video: Demonstration of the reverse charging function, showing a phone being charged by the walkie talkie.
2.6 FM Function
The SQ-8500 includes an FM radio function. Press the 'FM' button on the keypad to activate the FM radio. Use the arrow keys to tune to your desired frequency.

Image: The walkie talkie screen showing an FM frequency, indicating the device's FM radio capability.
2.7 Tri-Power Levels
The device offers three adjustable power levels (Low, Medium, High) to suit different communication needs and conserve battery life. Refer to the on-screen menu for power level selection.

Image: Two walkie talkies demonstrating the Tri-Power feature, indicating adjustable power output for varied range and battery efficiency.
3. Maintenance
3.1 General Care
- Clean the device with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Keep the device dry. Do not expose it to direct sunlight for prolonged periods or use in excessively humid conditions, as this may damage the mainboard and cause short circuits.
- Store the walkie talkie in a cool, dry place when not in use.
3.2 Battery Care
- To prolong battery life, avoid fully discharging the battery frequently.
- Charge the battery regularly, even if the device is not in use, to maintain its capacity.
- If the device will not be used for an extended period, charge the battery to about 50% before storage.
3.3 Waterproof Rating
The SQ-8500 has an IP55 waterproof rating, providing protection against dust ingress and low-pressure water jets from any direction. While it is water-resistant, it is not designed for submersion. Ensure all port covers are securely closed to maintain water resistance.

Image: The walkie talkie shown with water splashing on it, demonstrating its IP54/IP55 water resistance.
4. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Battery is low or not installed correctly. | Ensure battery is fully charged and properly installed. |
| Poor signal or communication range. | Antenna not properly attached; low power setting; environmental interference. | Check antenna connection; switch to a higher power level; move to an open area. |
| Flashlight not working. | Battery low; flashlight function not activated. | Charge the battery; press the flashlight button (6) to activate. |
| Reverse charging not working. | Output Charging Button not pressed; cable issue; device being charged is incompatible. | Press the Output Charging Button (15); try a different USB cable; ensure the device is compatible with 5V/2A output. |
| AI Noise Reduction not effective. | Feature not activated; extreme noise levels. | Ensure AI Noise Reduction button (5) is pressed; try to reduce ambient noise if possible. |
5. Specifications
| Feature | Specification |
|---|---|
| Model Number | SQ-8500 |
| Brand Name | SHIQSUN |
| Output Power (W) | 10W-25W (Max 20W as per title) |
| Battery Capacity (mAh) | 5800mAh |
| Waterproof / Water-Resistant | IP55 (also referred to as IP54 in some descriptions) |
| Battery Included | Yes |
| Material | Plastic |
| Storage Channel | 199 |
| Frequency Range | 144-148MHz, 156-163MHz, 430-440MHz, 446MHz, 462-467MHz |
| Dimensions | 144mm*66mm*44mm (Antenna not included) |
| Walkie Talkie Type | Portable |
| Display | Yes |
| Maximum Range | 10km-50km |
| Origin | Mainland China |
| Certification | CE, Dot, EAC, EPA, RoHS, TGA, UL |
| Key Features | Dual-Purpose Power Bank, Strong Flashlight, Red/Blue Strobe Lights, Dual PTT, Reverse Charging, AI Noise Reduction |

Image: Detailed dimensions of the SQ-8500 walkie talkie, including antenna length.
6. Warranty and Support
6.1 Warranty Information
This product is covered by the standard AliExpress buyer protection policies. For specific warranty details, please refer to the purchase agreement or contact the seller directly. Key policies include:
- Free Returns: Free returns are available within 90 days of delivery.
- Security & Privacy: Your personal details are protected and not shared with third parties without consent.
6.2 Customer Support
For any questions, technical assistance, or support regarding your SHIQSUN SQ-8500 Walkie Talkie, please contact the ShiqunTech Store through the AliExpress platform. They are committed to providing excellent service and will assist you with any inquiries.





