ROCKBROS Smart bluetooth Helmet Audio Riding Bicycle Bell Speaker Hands Free Phone Call Voice Navigation Waterproof IP54

ROCKBROS Smart bluetooth Helmet Audio Riding Bicycle Bell Speaker Handsfree Phone Call Voice Navigation Specification: Brand: ROCKBROS Color: Black bluetooth: 2.0+ Support for APP: Android 2.3+ Charging time: About 1 hour Size: Show as the picture Operating voltage: 3.4-4.3V Working current: 50mA Working temperature: -20-50 bluetooth connection distance: 25m Waterproof: IP54 Battery: 400mAH polymer lithium battery Audio frequency response: 120Hz-12KHz Audio distortion: 1% Audio signal to noise ratio: 60dB Audio output power: 3W Functions: bluetooth connectivity,support for android and IOS. Handsfree answer phone. Music player. Voice navigation. Voice search. APP support,for android. Features: Multifunctions,can use for bike,car,helmet etc. Recommended use for riding,running,climbing and so on. With velcro and shockproof sponge,easy to use. USB charging,one hour time full charging,82 hours standby. Lightweight,small body,large energy. If you want to know more about it,let's see the following page. Warning: 1. Not includes USB cable,you can charge it use your own android USB cable. 2. bluetooth Support for Android 2.0+ and IOS 2.0+. 3. APP only support for android 2.3+,not support for iphone. 4. Voice functions only support for Android system. Package includes: 1 x Helmet speaker 1 x Pair of velcro 1 x Shockproof sponge