Introduction
Thank you for choosing the Voistek 885Mono Wireless Bluetooth Headset. This manual provides detailed instructions for setting up, operating, and maintaining your headset to ensure optimal performance and longevity. Please read this manual carefully before using the product.
What's in the Box
Verify that all items are present in the package:
- Voistek 885Mono Headset
- USB-C Charging Cable
- USB Dongle (2.4GHz)
- User Manual

Image: All components included in the Voistek 885Mono headset package.
Product Overview
Familiarize yourself with the various parts and controls of your Voistek 885Mono headset.

Image: Labeled diagram of the Voistek 885Mono headset components.
- Padded Headband: For comfortable wear.
- On-Ear Controls: Buttons for answering/rejecting calls, Siri/voice assistant, volume, and power.
- Noise-Cancelling Microphone: Adjustable microphone with beamforming technology for clear voice pickup.
- USB-C Charging Port: For charging the headset.
- 40mm Dynamic Speaker: Provides clear audio for calls and multimedia.
Setup
1. Charging the Headset
Before first use, fully charge the headset. A full charge takes approximately 2 hours and provides over 45 hours of usage. A 5-minute quick charge can provide short-term talk time.
- Connect the USB-C charging cable to the headset's charging port.
- Connect the other end of the cable to a USB power source (e.g., computer USB port, wall adapter).
- The LED indicator on the headset will show charging status (refer to LED indicator section for details).
2. Connecting the Headset
The Voistek 885Mono headset supports dual-mode wireless connectivity: Bluetooth 5.3 and 2.4GHz USB Dongle.

Image: Dual wireless connection options for the headset.
2.1. Bluetooth Pairing (for Laptops, Tablets, Smartphones)
- Ensure the headset is charged and powered off.
- Press and hold the Power button on the headset until the LED indicator flashes blue and red, indicating pairing mode.
- On your device (smartphone, tablet, laptop), go to Bluetooth settings and enable Bluetooth.
- Search for available devices and select "Voistek 885Mono" from the list.
- Once connected, the LED indicator on the headset will show a steady blue light.
2.2. USB Dongle Connection (for PC, Laptop)
This method offers a plug-and-play experience without requiring Bluetooth pairing on your computer.
- Ensure the headset is charged and powered on.
- Insert the 2.4GHz USB dongle into an available USB port on your PC or laptop.
- The computer will automatically detect and install the necessary drivers (Plug & Play).
- The headset will automatically connect to the dongle. The LED indicator on both the headset and dongle will show a steady blue light when connected.
- You may need to select "Voistek 885Mono" as the default audio input and output device in your computer's sound settings.
Operating Instructions
Power On/Off
- Power On: Press and hold the Power button for 2-3 seconds until the LED indicator flashes blue.
- Power Off: Press and hold the Power button for 3-4 seconds until the LED indicator flashes red and then turns off.
Call Management
- Answer Call: Short press the Multi-function button (usually the main button on the earcup).
- End Call: Short press the Multi-function button during a call.
- Reject Call: Press and hold the Multi-function button for 2 seconds when an incoming call rings.
- Activate Voice Assistant (Siri/Google Assistant): Double-press the Multi-function button when not on a call.
Volume Control
- Volume Up: Short press the Volume Up (+) button.
- Volume Down: Short press the Volume Down (-) button.
Microphone Mute
- Mute/Unmute: Short press the Mute button on the microphone boom or earcup (if available). The LED indicator on the microphone will show red when muted.
Wearing the Headset
The headset features a unilateral design for comfort and awareness of your surroundings. The microphone boom is flexible and can be adjusted for optimal voice pickup.

Image: Ergonomic and flexible design features of the headset.
- Adjust the headband for a comfortable fit.
- Position the microphone approximately 1-2 cm from your mouth for best noise cancellation and voice clarity.
- The earcup can swivel 90 degrees, and the microphone can rotate 270 degrees for left or right ear use.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the headset. Do not use abrasive cleaners or solvents.
- Storage: Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the headset frequently. Charge it regularly, even if not in use for extended periods.
- Avoid Water: The headset is not waterproof. Avoid exposure to water or excessive moisture.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headset does not power on. | Low battery. | Charge the headset fully. |
| Cannot connect via Bluetooth. | Headset not in pairing mode; Bluetooth disabled on device; too many paired devices. | Ensure headset is in pairing mode (flashing blue/red). Enable Bluetooth on your device. Forget previous pairings on your device and try again. |
| No sound or poor sound quality. | Volume too low; incorrect audio output selected; headset not properly connected. | Increase volume. Check device's audio settings to ensure "Voistek 885Mono" is selected. Reconnect the headset. |
| Microphone not working. | Microphone muted; incorrect audio input selected; microphone not positioned correctly. | Unmute the microphone. Check device's audio settings to ensure "Voistek 885Mono" is selected as input. Adjust microphone position. |
| USB dongle not connecting. | Dongle not fully inserted; driver issue; headset not powered on. | Ensure dongle is fully inserted. Try a different USB port. Restart your computer. Ensure headset is powered on. |
Specifications
| Model Name | 885Mono |
| Connectivity Technology | Wireless (Bluetooth 5.3, 2.4GHz USB Dongle) |
| Ear Placement | On-Ear (Mono) |
| Form Factor | Supra-Aural |
| Microphone Features | Noise Reduction, Beamforming Technology |
| Speaker Driver Size | 40 mm |
| Impedance | 32 Ohms |
| Frequency Response | 20 Hz - 20 KHz |
| Sensitivity | 121 dB |
| Battery Type | Lithium-ion |
| Charging Time | Approximately 2 hours |
| Usage Time | Over 45 hours |
| Weight | 127 Grams |
| Material | ABS, Aluminum, Faux Leather |
| Compatible Devices | Computer, Laptop, Mobile Phone |
Warranty and Support
Voistek offers a 30-day return policy and lifetime support for this product. For any questions, issues, or warranty claims, please contact Voistek customer service through your Amazon purchase platform. Provide your order number and a detailed description of the issue for prompt assistance.
For further assistance, please visit the Voistek Brand Store on Amazon.