Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your Earbay Wireless Headset. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.

Figure 1: Earbay Wireless Headset with Charging Base and USB Dongle.
Package Contents
Ensure all items are present in the package:
- Wireless Headset with Microphone (1)
- Charging Base (1)
- USB Dongle (1)
- Type-C Charge Cable (1)
- User Manual (1)
- Storage Bag (1)

Figure 2: All components included in the Earbay Wireless Headset package.
Setup
Charging the Headset
Before first use, fully charge the headset. The headset offers two charging methods:
- Dedicated Base Charging: Place the headset onto the charging base. Ensure the charging contacts align. The indicator light on the base will show charging status.
- Type-C Cable Charging: Connect the provided Type-C USB cable directly to the headset's charging port and to a USB power source (e.g., computer, wall adapter).
A full charge provides up to 45 hours of talk time.

Figure 3: Headset charging via dedicated base and direct Type-C cable connection.

Figure 4: Battery life indicators for the headset.
Connecting the Headset
The headset supports two connection methods: Bluetooth and USB Dongle.
1. Bluetooth Connection
To connect via Bluetooth:
- Ensure the headset is charged and powered on.
- Activate Bluetooth on your device (PC, laptop, mobile phone, tablet).
- Search for "BT-88" in the list of available Bluetooth devices.
- Select "BT-88" to pair. The headset will indicate a successful connection.
The headset uses advanced Bluetooth 5.3 technology for a stable connection up to 49ft (15m).

Figure 5: Bluetooth 5.3 connectivity and range.
2. USB Dongle Connection (Plug and Play)
For computers without Bluetooth or for a direct, driver-free connection:
- Insert the provided USB dongle into an available USB port on your computer.
- The system will automatically recognize the dongle and connect to the headset. No additional software or drivers are required.
- Ensure the headset is powered on.

Figure 6: Two connection methods: Bluetooth and USB Dongle.

Figure 7: USB Dongle plug-and-play setup with computer sound settings.
Operating Instructions
Wearing the Headset
The headset is designed for comfort during long periods of use. The headband is adjustable, and the ear cushions are made of soft, breathable memory foam. The microphone boom can rotate 270 degrees, allowing it to be worn on either the left or right side.

Figure 8: Headset designed for comfort with ultra-soft memory foam.
Call Management and Audio Control
- Mute Function: The headset features an easy one-touch mute button on the microphone boom. Press the button to mute or unmute your microphone during calls.
- Volume Control: Use the volume control buttons on the headset to adjust audio levels.
- AI Noise Cancellation: The integrated Environmental Noise Cancellation (ENC) technology automatically filters out most background noise during calls, ensuring clear communication.

Figure 9: Seamless mute function for privacy during calls.

Figure 10: AI Noise Cancellation technology for clear audio.
Voice Assistant Activation
For hands-free control, press and hold the Multi-Function Button (MFB) on the headset for 3 seconds to activate your device's voice assistant (Siri, Google Assistant, etc.). This allows you to make calls, send messages, get directions, and more without touching your phone.

Figure 11: Hands-free control via voice assistant.
Compatibility
The Earbay Wireless Headset is compatible with a wide range of communication platforms and devices, including Skype, Zoom, Teams, and more. It works with computers, PCs, laptops, mobile phones, tablets, and VoIP systems.

Figure 12: Extensive compatibility with various platforms.
Maintenance
To ensure the longevity and optimal performance of your headset, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the headset and charging base. Avoid using abrasive cleaners or solvents.
- Storage: When not in use, store the headset in the provided storage bag or on its charging base to protect it from dust and damage.
- Battery Care: Avoid fully discharging the battery frequently. For long-term storage, charge the headset to about 50% and store it in a cool, dry place.
- Environmental Conditions: Do not expose the headset to extreme temperatures, humidity, or direct sunlight.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headset does not power on. | Low battery. | Charge the headset using the Type-C cable or charging base. |
| Cannot connect via Bluetooth. | Headset not in pairing mode; Bluetooth off on device; device out of range. | Ensure headset is powered on and discoverable. Turn on Bluetooth on your device. Move headset closer to the device. |
| USB dongle not recognized. | Dongle not fully inserted; USB port issue. | Ensure dongle is fully inserted. Try a different USB port. Restart your computer. |
| No audio or poor audio quality. | Volume too low; incorrect audio output device selected; interference. | Adjust headset and device volume. Check your device's sound settings to ensure "BT-88" or "BT-88 Dongle" is selected as the output. Move away from sources of interference. |
| Microphone not working. | Microphone muted; incorrect input device selected. | Press the mute button to unmute. Check your device's sound settings to ensure "BT-88" or "BT-88 Dongle" is selected as the input. |
| Headset drops connection frequently. | Out of range; interference; low battery. | Stay within 49ft (15m) of your device. Avoid strong Wi-Fi signals or other Bluetooth devices. Recharge the headset. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | KSG-BT882CMD-YZ |
| Brand | Earbay |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Bluetooth Range | Up to 15 meters (49 feet) |
| Noise Control | Active Noise Cancellation (ENC) |
| Battery Life | Up to 45 hours (Talk Time) |
| Charging Port | Type-C |
| Audio Driver Size | 40 Millimeters |
| Impedance | 32 Ohm |
| Sensitivity | 118 dB |
| Frequency Response | 2.48 GHz |
| Material | ABS, Aluminum, Faux Leather, Plastic, Stainless Steel |
| Item Weight | 1.41 pounds |
| UPC | 712636393363 |
Warranty and Support
Earbay provides a 12-MONTH Warranty for this product. For any questions, technical assistance, or warranty claims, please contact our professional customer service team. Refer to the contact information provided in your purchase documentation or visit the official Earbay website for support.
Note: Our headphones only support a single connection and do not support two devices at the same time.





