and high quality.Compact size and , easy for carry. Using latest Bluetooth 5.0 technology, transmission, ultra-low power consumption Support all Bluetooth devices, support automatic answering function, no need to answer the phone manually when calling, safe driving Large button design, the for male riders.Built-in high-quality anti-interference microphone, external windproof sponge, can effectively realize hands-free answering, hang up the phone, high sound fidelity Support up and down music, volume sound addition and subtraction, playback pause, automatic callback and other functions, easy to operate, easy to use Built-in high-quality headphone speaker, strong bass, clear mid-range, high-pitched sound. Built-in mini USB charging interface for quick and easy charging Built-in large capacity lithium battery, multi circuit , long standby and working time. Type: advanced type Bluetooth: 5.0 Transmission range: about 10m Frequency range: 2.4026-2.480GHz MIC range: less than or equal to 1m SNR: more than the 80dB Charging voltage: 5V Battery: built-in 3.7V 250mA lithium battery Charging time: about 2h Standby time: about 160h Continuous working time: about 8h Product features: listen to music, answer incoming calls, voice navigation, voice call. Colour: black Material: Metal+Plastic Specification:B:10 Pcs Package Contents: 10 x Motorcycle Helmet Headset Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.