General: Product Type Headphones - wireless - radio Recommended Use TV, PC multimedia Features SRS Headphone Headphones: Headphones Type Headphones - binaural Headphones Form Factor Ear-cup Connectivity Technology Wireless - radio Sound Output Mode Stereo Response Bandwidth 10 - 20000 Hz Sensitivity 100 dB Diaphragm 40 mm Magnet Material Neodymium Wireless Link : Radio Frequency Range 863 - 865MHz Radio Channel Qty 3 Modulation Type FM Transmission Range 100 m Connections: Connector Type 1 x headphones (mini-phone stereo 3.5 mm) Miscellaneous: Included Accessories FM transmitter, 6.3 mm (1/4") stereo adapter Power: Power Device Power adapter - external Battery 2 x battery - AAA type - rechargeable - Nickel Metal Hydride Included Qty 2 Run Time (Up To) 15 hour(s)