Features volume control and microphone on flat ABS plastic panel. Micro USB charging cable included. Power/Technology:  Rechargeable Lithium Polymer battery: 3.7V; Capacity - 50 mAH; Input: DC 5V / 200mA; Work Current: 30 mA; Charge Current: 30-150mA; Transmit power: 98-108db; Frequency response: 20-20000hz; Transmission Range: 10m (30 ft); Wireless V 4.2. Item must be charged prior to first use. Charge time varies by device, minimum 2 hours. Playback time: Approx. 1-2 hours depending on use. Features red LED indicator light. This item cannot ship internationally except to Canada via ground.This item can only ship to Alaska, Hawaii, Puerto Rico and any other small U.S. island territory via Air.