TECHNICAL SPECIFICATIONSBluetooth SpecificationVersion 4.1Bluetooth ProfileA2DPOperating Range33 ft.Speaker TypeBuilt-in typeDimensions2.64" (W) x 8.03" (H)Weight19.3 oz.Power5 V/1.2 A (AC adapter); Built-in rechargeable batteryOperating TimeUp to 20 hoursCharging TimeLess than 5.5 hours