Features: Bluetooth Transmitter, sends stereo sound from your TV to three pairs of headphones at the same time. Perfect for when you want to sit back, relax and enjoy your shows in the evening, without waking the kids. Just connect it to your TV via the headphone socket, optical out or composite o out and it can transmit o wirelessly to yours and your partners headphones in wired quality, without the need for a splitter or trailing wires. Operating via USB power allows the transmitter to be permanently plugged into your TV USB port so that you can reconnect swiftly anytime you want. Portable battery use enables listening for 4-5 hours Playing Time between charges, great for use in bed with a tablet. Built-in four bluetooth modules, divided into three, can connect to three bluetooth peripheral audio sources at the same time and output at the same time. Specifications: Input voltage: DC5V Input current: 500ma Power: 185mw/h Battery capacity: 650mAh Working time: 4-5h Effective distance: within 5-8 meters Package includes: 1* Bluetooth Transmitter 1* USB Charger Cable 1* 3.5mm Audio Cable 1* RCA Cable