Feature: 1. This headset adopts the latest BT 5.0 technology, fast connection and stable transmission. (Optional) 2. Made from high-grade ABS materials and soft protein ear cushions, very comfortable to wear. 3. Light weight design and adjustable padded headband fits for different head sizes. 4. Easy to use, you can easily control the music/calls with buttons on the headset (volume +/-, power on/off, answer/reject calls, switch songs). 5. The rotatable microphone is able to accurately pick up the sound, you can freely adjust the angle of the microphone to make the sound clearer and louder. 6. Noise cancelling microphone, pick up your voice exactly and block most noise from the surroundings. It can ensure you having a clear conversation even in noisy environment Specification: Item Type: Headphone Materia: ABS+PU Bluetooth Version: Bluetooth 5.0 Speaker: 40mm Impedance: 32Ω±15％ Sensitivity: 105±3 dB Frequency: 20~20 kHz Microphone: Omnidirectional Battery: 300mAh Charging Time: 1-2H Standby Time: 100Hour Working Time: 20-22H Connection: Type-C Connection Method: Bluetooth, USB (Optional