BT12 Motorcycle Helmet Headset Wireless Hands-free Call Kit Stereo Anti-interference Waterproof Music Player Speaker Motorcycle wireless Bluetooth handsfree - Built-in high-quality anti-interference microphone, external windproof sponge, high fidelity. - Support up and down music, volume increase and decrease, playback pause, automatic callback, and other functions, simple operation, and easy to use. - USB charging interface for quick and easy charging. - Small and lightweight, easy to carry. - Suitable for Full face helmet/half face helmet, off-road helmet, flip helmet. •Phone Call Handsfree, easy to use - One-click for answering and ending phone calls (Long press 2 seconds to Reject) - Automatically answer incoming calls in 5 seconds •Auto Power OFF - Within 5 minutes when Bluetooth disconnected ,100% release your hands •CSR Professional Bluetooth V4.2 Chipset - Qualcomm CVC 6.0 audio technology , the other person can clearly hear your voice when on calling - Qualcomm Kalimba DSP noise cancellation , you can hear clearer sound through speaker - Talk-Time Extension , more than 20 hours talking time - A2DP V1.2 , Better performance on viber/whatsapp/wechat/skype online talking - Support 2 phone Bluetooth connections •Waterproof Design, No fear of rain and sweat Low power consumption - 500mAh Battery Inside, standby time 180 hours • Attention : - Do not support intercom function. - Only support the Bluetooth handsfree calling function.