Acrylic knit beanie with wireless headphones. Power/Technology: Rechargeable Lithium Polymer battery: 3.7V/200 mAH; Input: 5V; Output Power: 2W x 2; Work current: 200 mA in charging; Frequency response: 20Hz-20 kHz; Transmission range: 10m (32 feet); Wireless V 4.2. Playback time: Approx. 3 to 3.5 hrs depending on usage. Must be charged prior to first use. Charge time varies by device. Instructions and charging cable included. LED indicator lights. 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.