1. Features: - One - sided design, which is very suitable for listening to ambient sounds during calls. - This headset uses the latest Bluetooth 5.0 technology, with fast connection and stable transmission. - The lightweight headset is equipped with an adjustable headband, suitable for any head shape; soft ear pads and anti - slip pads can be firmly fixed in place, ensuring your all - day comfort. - It is easy to use. You can easily control music/calls (volume +/-, power on/off, answer/reject calls, switch songs) through the buttons on the headset. - The rotatable microphone can accurately pick up sounds. You can freely adjust the angle of the microphone to make the sound clearer and louder. - It has a built - in 300mAh rechargeable lithium battery, providing 30 - 60 hours of talk time and about 100 hours of standby time. It comes with a charging base, enabling convenient and fast charging. 2. Specifications: - Type: Headset - Material: ABS, soft white - Color: Black - Bluetooth version: 5.0 - Working distance: 30m - Working voltage: 3.7V - Charging voltage: 5V - Battery capacity: 300mAh - Charging time: 1 - 2 hours - Speaker size: 40mm - Impedance range ±2S 000Hz - Packaging size: 16 * 16 * 7cm / 6.3 * 6.3 * 2.8 inches - Packaging weight: 193g / 6.8oz 3. Package list: - 1 * Headset - 1 * USB charging cable - 1 * Charging base - 1 * User manual