* Brand: ROCKBROS
* Velcro installation on helmets and other suitable locations (e.g. car dashboard, bags etc.)
* Bluetooth: 2.0+ connection
* Bluetooth connection distance: 25m
* Rechargeable Battery: 400mAH polymer lithium battery
* Charging time: About 1 hour
* Standby time: 82 hours
* Waterproof: IP54
* Audio frequency response: 120Hz-12KHz
* Audio output power: 3W
1 x Helmet speaker
1 x Pair of velcro
1 x Shockproof sponge
1. Does not ship with USB charging cable.
2. Bluetooth Support for Android 2.0+ and IOS 2.0+.
3. APP only supports Android 2.3+, not for iphone.
4. Voice functions only support for Android system.