Dance in the shower, sing in the rain—this Bluetooth speaker resists downpours, showers & the flow of tears from your enemies. Enjoy full, rich sound, wear it on your wrist, hang it from your backpack, take it on a bike ride. A great gift, it delivers 4 hrs of playback per charge. // TECH SPECS: Bluetooth: 4.0+EDR, 10M range. Speaker: 13mm dual magnetic trumpets, 3W. Freq Range: 100HZ–20KHZ. S/N: 75db. THD: less than 1%. Built-in Lithium Battery: 400mAh. // MADE OF: ABS + Iron + Electronic Comp.