Technical parameters:Continuous play time: 6 hoursBattery capacity: 750mASpeaker Output Power: 3WSNR: 80dBSensitivity :( induced voltage) 40mvChannel: MonoInput Power: DC 5V / 500mAPower plug Specifications: MICRO USBDistortion: !#!lt!*!3%Maximum Volume: 93db ± 3%Packing information:Available colors: black, whiteProduct Specifications: 127 * 90 * 83 (mm)