1、BLUETOOTH 0 4G CONNECTIVITY: Telephone headset pairs easily with your phone or any Bluetooth enabled device and is compatible with most devices. Also available with USB transmitter for PC via 4G connection. 2、COMFORTABLE TO WEAR: Wireless telephone headset features a headband design and skin friendly ear cushions for a stylish and comfortable experience, perfect for long conference calls. 3、NOISE CANCELING MICROPHONE: Telephone headphone has a noise cancelling microphone. Delivering superior sound quality and ensuring your calls are clear, it's ideal for working or studying from home. 4、EASY TO OPERATE: With the 3 buttons on the headset, you can easily control the voice you need. The microphone lever is free to rotate 180 degrees to suit your needs. 5、RANGE OF APPLICATION: Bluetooth telephone headset is versatile enough for truck or car drivers, offices, call centers, and more to meet your different usage needs. 1 x Bluetooth Telephone Headset1 x Charging Base1 x Charging Cable1 x USB Transmitter Item Type: Bluetooth Telephone HeadsetMaterial: ABSColor: BlackType: MonauralBattery Type: Built In 300mAh Lithium Ion Battery (Included)Bluetooth Version: 5.0Frequency Range: 2.402GHz- 2.480GHzWorking Distance: Approx. 10-30m / 32.8- 98.4ft