Easy installation, comes with all the necessary attachments for different helmets. Connect to your handphone by bluetooth, to pick up phone call and listen to music. Comes with cables that allows you to connect GPS/Sat Nav., Media/MP3 Player, and walkie talkie. Good sound/voice quality within 80km/h - 110km/h; depending on helmet ( full face / open face) Water resistance: Tested and proven during heavy down pour. Battery life: 10-13 hours for V8 . You can be assured of the quality and durability of the product. Features: 1500mAH battery that can last 24 hours on a full charge No transmission interference up to speeds of 80-110km/h Able to simultaneously pair with 2 different Bluetooth enabled mobile phones High-fidelity Bluetooth transmission of music and voice calls Automatic reminders that your battery is low and needs recharging over the Bluetooth headset Paring with rear-seat headset to realize talkback between front and rear seats. Package list: 1 x Bluetooth Headset 1 x Mounting package 1 x Stainless steel spring clip 1 x Mini-USB charging cable 1 x Hard Microphone 1 x User Manual