Features:

Optical Audio In for New Generation TV

RF Transmission Auto OFF for Power Saving

Microphone Button for Sound Amplification

Specifications:

Transmission Mode: GFSK

Carrier Frequency: 2.4GHz

Operating Voltage: Transmitter 5V

Headphone 3.7V

Frequency Response: 20Hz~20 KHz

Distortion: 0.5%

Signal-to-noise ratio: 80dB

Working Time: 5 Hours

Working Range: 30 Meters