ABS Plastic;Features volume control and microphone on flat panel; Micro USB charging cable included; Power/Technology: Rechargeable Lithium Polymer battery: 37V; 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 42; 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; Product Size: 0.375" w x 1.875" h x 0.3125" d; Shipping available to contiguous U.S. addresses and Canada via Ground only. Cannot ship via Air, Internationally or to Alaska, Hawaii, Puerto Rico and any other small U.S. island territory.;
