Specifications︰
1.Built in lithium battery:400mAh 2.Output power：3W 3.Internal speaker：45MM 4.Mic Sensitivity： 400mV 5.Frenquency：50Hz-20KHz 6.S/N：≥88dB 7.Working voltage：DC 5V 8.Outdoor sport speaker 9.Solid mobile Bluetooth stereo 10.Shock proof, dust proof，IP*4 waterproof 11.Equipped with aluminum alloy mountaineering buckle, easy to carry 12.working distance10M 13.Support 3.5MM AUX in,TF card，microphone，Voice prompt function
