1NOISE REDUCTION FUNCTION: The built in microphone with noise reduction function can realize hands free and a clear call for a better sound experience. 2STABLE TRANSMISSION SPEED: This head mounted wireless noise canceling headset provides a more stable transmission speed, lower latency and better o output. 3SOFT EARMUFFS: The soft earmuffs have advanced ventilation and unique ergonomic design, personalized and flexible fit to ensure that the earphones are close to the ears and suitable for various head shapes. 4HIGH QUALITY: The high quality built in microphone enables business level communication even in strong winds or noisy environments. 5BLUETOOTH 5.0: Bluetooth 5.0 guarantees a fast and stable connection with your Bluetooth device, which is convenient for you to communicate with other people. Item Type: Bluetooth Headset Material: ABS Bluetooth Name: ANC Headphone Bluetooth Name: V5.0 Support Protocol: A2DP, HFP, HSP, AVRCP Transmission Distance: Approx. 12m / 39ft Working Frequency: 20-20KHz Battery Capacity: Lithium Battery 300mAh ( with Built in Battery) Charging Time: About 2 Hours Playing Time: About 30 Hours Standby Time: About 200 Hours Noise Reduction: -252DB Sensitivity: 1053DB 1 x Earphone 1 x USB Cable