Details For its elegant design, superb sound, long battery life as well as high quality. The speaker will meet your high requirement for any precious Bluetooth speaker. We prefer to describe it as your best choice ever rather than a top speaker, a new generation or an incredible masterpiece etc. Parameter Bluetooth Version: 4.0 Speaker: 5Wx2, 4 Battery: 2200mAh Waterproof Level: IPX6 Working Distance: 33feet Sensitivity: 70db Frequency Response: 80Hz- 18KHz Distortion: 0.1% @1W Working Voltage: 3.7V Charging Voltage: DC 5V. Charging Time: 3-4hours Working Time: 8-10hours Item Dimension: 5.89X1.85X2.7inches Net Weight: 11.6ounces Package Dimension:7.36X2.94X4.53 inches Package Weight:15.63 inches What's in the Box: 1 x Bluetooth Speaker 1 x Manual 1 x USB Cable 1 x 3.5mm Audio Cable Customer ServiceIf had any after-sale issue, please feel free to contact us. We would try our best to improve customer satisfaction.