VisionTek 900892 BTi65 Bluetooth Waterproof Speaker Speaker Type: Bluetooth Speaker Specification: Transmission Distance: Wireless Technology: Bluetooth Input Ports: Bluetooth, AUX In, Micro USB Battery: Built-In Rechargable 3.7V/2000mAh Playback Time (up to): 10 Hours Dimensions: 3.86 x 3.54 x 1.97 Weight: 0.63 lb.