Bluetooth V4.0 + Speaker+Power Bank+Bike Light+Bicycle Bell+Iphone Bracket The Width Can Be Adjusted Between 50 - 86 MM, It Is Available for Most Phone. Please Do Not Worry. Waterproof,Dustproof, Anti-scratch, Shockproof,High temperature Resistant Speaker Stylish and exquisite appearance, which is convenient to carry, With it you can enjoy music anytime and anywhere Excellent for Outdoor Sport and exercise and Travel Used as 4400MAH power bank can charge your phone or other device in emergency Double LED Lights with front and flashing light for choosing Bluetooth connect to mobile phone for calling and playing music Support TF Card for play mp3/wma/wav music Application of mobile phone andriod or IOS software Honking as the bicycle bell ir alarm to remind the front vehicles or passerby Support AUX input IP54 waterproof 32bit ARM master platform design and USB software upgrade Note:Do not soak in water! It only support water mist- proof! Pre-order product, 10-20 days delivery FREE SHIPPING!!!