Speaker: 3W Battery: 3.7V 400mAh Receiving distance: 10 meters (range according to the environment) Charging time: 2-3 hours Playback time: 2-2.5 hours Frequency response: 50HZ-20KHZ Signal to noise ratio: ≥90db Housing material: ABS plastic + plating Color: black, white, pink, blue, green Support function: Bluetooth / U disk / TF card / audio output Single net weight: about 190g Single gross weight: about 230g Product size: about 97*50*73mm / 3.82*1.97*2.87in Packaging size: about 122*76*68mm / 4.80*2.99*2.68in