Hi-Fi Wireless Headset Sport Headphone For TV DVD MP3 PC FM Radio RF Earphone Universal Noise Cancelling Voice Headse Features: Transmitters and computer connections, wear can be accepted for freedom of movement within the room, truly wireless voice chat Transmitters will be placed in infants, the elderly, the sick and other people in need of care side, the receiver can be used to listen to the voices of those being cared for easy care. Wireless headset receiver can listen to FM radio, electric tuner automatically find Desk, frequency stability. Connect any audio output device. High-fidelity sound, acceptable range of more than 10 meters. Specifications: Specifications: Earmuffs material: PU leather Headphone cable material: PVC Size(L x W x H):about 21x16.3x8.5mm Distortion rate: 1% Impedance: 32Ω Power Requires 2 x AAA batteries in the emitter and 2 x AAA Batteries in HeadphonesBatteries not included Sound principle: moving coil Lead wire length: about 1.2m Sensitivity: 108dB Speaker diameter: 40mm Plug type: straight plug type Frequency response range: 84-108Hz Package Included: Headset Stand Audio cable