Red Fox Wireless Rover IPX7 Waterproof Bluetooth Speaker with Bike/Stroller Mount (Red) IPX7 Waterproof , Universal 1/4"-20 multi-mount threaded base , Weight 10.8oz. (speaker only). Size 2.75" W x 2.25" T (speaker only) , Battery Life up to 14 hours ,Charge Time 3-4 hours Battery Capacity 700 mAh ,Bluetooth Distance 32' ,Bluetooth Version 3.0 Speaker Driver 50mm , Speaker Output 3W , Frequency Response 120Hz-20KHz Listen to music , Make and Take phone calls , Built-in microphone , Activate Siri or Google Voice , Voice prompts.