5in1 Wireless Cordless Headset Headphone For TV FM PC Package Includes:Emitter;Receiver (earphones);Audio Cable;Y adaptor cable;Instruction Manual. Functions:Wireless Headphones; FM Radio Receiving; Wireless Net Chatting; Wireless Monitoring; Wired Headphones. Emitter Specifications:Emitter frequency: 86 MHz; Modulation mode: FM;Emission distanc: 7 meters; Power Supply: 2 x AAA battery (batteries NOT included) Receiver:Frequency range: 86 - 108 MHz;Reception mode: FM;Power Supply: 2 x AAA battery (batteries not included). Wirelessly receive audio signal with this 5-in-1 Wireless Headset device.