Introduction
Thank you for choosing the EBTOOLS Bluetooth Cordless Mono Telephone Headset. This manual provides essential information for setting up, operating, and maintaining your headset. Please read these instructions carefully before use to ensure optimal performance and longevity of your device.

Image: EBTOOLS Bluetooth Cordless Mono Telephone Headset, side view. This image displays the overall design of the headset, featuring a single earcup, an adjustable headband, and a microphone boom.
Safety Information
- Do not expose the headset to extreme temperatures, humidity, or corrosive substances.
- Avoid dropping or subjecting the headset to strong impacts.
- Do not attempt to disassemble or modify the headset. This may void the warranty and cause damage.
- Keep the headset away from children and pets.
- Use only the provided or a certified Micro USB cable for charging.
- Prolonged listening at high volume levels may cause hearing damage. Adjust volume to a comfortable level.
Package Contents
Please check the package for the following items:
- EBTOOLS Bluetooth Cordless Mono Telephone Headset
- Micro USB Charging Cable
- User Manual (this document)

Image: EBTOOLS Bluetooth Cordless Mono Telephone Headset and its Micro USB charging cable. This image shows the headset alongside its charging cable, indicating the items typically included in the package.
Product Overview
Familiarize yourself with the components and controls of your headset:

Image: Diagram showing the headset controls: LED indicator, Volume Up, Volume Down, Micro USB charging port, and Multifunctional button. This diagram labels the key buttons and ports on the headset's earcup.
- Multifunctional Button: Used for power on/off, pairing, play/pause, answer/end calls.
- Volume Up Button: Increases audio volume.
- Volume Down Button: Decreases audio volume.
- LED Indicator: Displays status (power, pairing, charging).
- Micro USB Charging Port: For connecting the charging cable.
- Rotatable Microphone: Captures your voice, can be adjusted for optimal positioning.
- Padded Earcup: Provides comfort during extended use.
- Flexible Headband: Allows for comfortable fit and wearing on either ear.
Setup
1. Charging the Headset
Before first use, fully charge the headset. Connect the Micro USB charging cable to the headset's charging port and the other end to a USB power source (e.g., computer USB port, wall adapter). The LED indicator will show charging status and turn off or change color when fully charged.
- Charging Time: Approximately 2 hours.
- Battery Life: Up to 11 hours talk time, 160 hours standby time.
2. Pairing with a Bluetooth Device
- Ensure the headset is turned off.
- Press and hold the Multifunctional Button for approximately 5-7 seconds until the LED indicator flashes red and blue alternately. This indicates the headset is in pairing mode.
- On your device (smartphone, laptop, PC, tablet), enable Bluetooth and search for available devices.
- Select "EBTOOLS Headset" (or similar name) from the list of found devices.
- Once paired, the LED indicator on the headset will flash blue slowly or turn solid blue, indicating a successful connection.
- If prompted for a password, enter "0000".
The headset will automatically attempt to reconnect to the last paired device when powered on.
Operating Instructions
Power On/Off
- Power On: Press and hold the Multifunctional Button for 3 seconds until the LED flashes blue.
- Power Off: Press and hold the Multifunctional Button for 3 seconds until the LED flashes red.
Making and Receiving Calls
- Answer Call: Press the Multifunctional Button once.
- End Call: Press the Multifunctional Button once during a call.
- Reject Call: Press and hold the Multifunctional Button for 2 seconds.
- Redial Last Number: Double-press the Multifunctional Button.
Adjusting Volume
- Press the Volume Up Button to increase the volume.
- Press the Volume Down Button to decrease the volume.
Microphone Usage
The microphone is rotatable, allowing you to position it optimally for clear voice capture. Adjust the microphone boom closer to your mouth for better clarity.

Image: EBTOOLS headset illustrating the 330-degree rotatable microphone for optimal voice pickup. This image highlights the microphone's flexibility and range of motion.
Wearing the Headset
The headset features a flexible headband and padded ear cushions designed for comfort during long periods of use. It can be worn on either the right or left ear by rotating the microphone boom.

Image: Close-up view of the comfortable padded ear cushion and flexible headband of the EBTOOLS headset. This image emphasizes the design features contributing to user comfort.
Maintenance
- Cleaning: Wipe the headset with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To preserve battery life, charge the headset regularly, even if not in frequent use. Avoid fully discharging the battery for extended periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headset does not power on. | Low battery. | Charge the headset for at least 30 minutes. |
| Cannot pair with device. | Headset not in pairing mode; Bluetooth off on device; device too far. | Ensure headset is in pairing mode (flashing red/blue LED). Turn on Bluetooth on your device. Move headset closer to device (within 10 meters). |
| No sound or poor sound quality. | Volume too low; headset not connected; interference. | Increase volume on headset and device. Reconnect headset. Move away from other wireless devices. |
| Microphone not working. | Microphone muted on device; microphone not positioned correctly. | Check device settings for microphone mute. Adjust microphone boom closer to your mouth. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | EBTOOLSsx40pef61v |
| Wireless Technology | Bluetooth 5.0 |
| Bluetooth Range | Up to 10 meters (32.8 feet) |
| Talk Time | Up to 11 hours |
| Standby Time | Up to 160 hours |
| Charging Time | Approximately 2 hours |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Item Weight | 4.2 ounces |
| Microphone | Flexible, Rotatable |
| Control Type | Media Control |
Warranty Information
EBTOOLS products are designed and manufactured to the highest quality standards. This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims. For specific warranty terms and conditions, refer to the documentation provided at the time of purchase or contact customer support.
Customer Support
If you encounter any issues or have questions regarding your EBTOOLS Bluetooth Cordless Mono Telephone Headset, please contact our customer support team. For the most up-to-date contact information, please visit the official EBTOOLS website or refer to your purchase documentation.