1.high quality bluetooth speaker 2.with microphone,handsfree phone call 3.stereo ... move, very convinent and fashion.7.charge battery. Specifications: 1.Input sensitivity: 300MV2.Frequency range:65Hz~20KHz3.Signal-to-noise ratio ... ,8:color: Black, white, yellow, pinkAccessories:USB Cableuser manualwarranty card high quality bluetooth speaker with waterproof function wst-827