Features: The Bluetooth wireless headset can be installed in the helmet. It can connect two phones and has some simple conduction on your phone. Such as: answering / rejecting incoming calls, automatically answering calls, voice dialing, music player (pause) control, next (previous) song control, volume increase and decrease, etc. Priority: Incoming Call>Music, pause music when calling, and automatically resume playing music after the call ends. Voice prompt function: let you know the working status of the helmet wireless headset. Connect mobile phone, voice prompt (switch), voice dialing, voice audio, stereo music (A2DP), playback control (AVRCP), personal volume control, advanced noise control. Physical noise reduction and software noise reduction simultaneously, the sound quality is greatly improved, the thickness of the earpiece is reduced, the comfort is greatly improved, and the volume is improved. Specification: Product Model: HF88 Product Color: Black Special features: Noise reduction Bluetooth version: 4.1 + EDR Headphone speaker: HiFi speaker Rechargeable lithium battery: 180 mAh Bluetooth distance: 10 meters Controller button panel: Waterproof Standby time: about 50 hours Charging time: about 4 hours Call time: about 6 hours Product Size: Approx. 53 * 4.2 * 0.5 cm/ 20.9 * 1.7 * 0.2 in Package Size: Approx. 250 * 50 * 25 mm/ 7.5 * 3.3 * 1.4 in Weight: 62 g Package list: 1 * Helmet Wireless Headset 1 * USB Cable 4 * Felt Bonded Headphone Pad 1 * User Manual 1、The Bluetooth wireless headset can be installed in the helmet. It can connect two phones and has some simple conduction on your phone. Such as: answering / rejecting incoming calls, automatically answering calls, voice dialing, music player (pause) contr 2、Priority: Incoming Call>Music, pause music when calling, and automatically resume playing music after the call ends. 3、Voice prompt function: let you know the working status of the helmet wireless headset. 4、Connect mobile phone, voice prompt (switch), voice dialing, voice audio, stereo music (A2DP), playback control (AVRCP), personal volume control, advanced noise control. 5、Physical noise reduction and software noise reduction simultaneously, the sound quality is greatly improved, the thickness of the earpiece is reduced, the comfort is greatly improved, and the volume is improved.