Usage Tips:1.-107 Bluetooth 4.0 Stereo Splitter adapter Music Receiver Sharing Device Function for earphone for mobile phone 2.Dual o Bluetooth Transmitter:Bluetooth Transmitter, sends stereo sound from your TV to two 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 out and it can transmit wirelessly to yours and your partners headphones in wired quality, without the need for a splitter or trailing wires. 3.Powered by USB or Battery: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 10 hours Playing Time between charges, great for use in bed with a tablet. 4.Great Connectivity:One of the only Bluetooth transmitters to offer optical in, The Transmitter can be connected to almost any non Bluetooth device. And with Bluetooth version 4.0, its a simple, hasslefree and user friendly process to hook up to two pairs of headphones, a pair of headphones and a speaker, or any combination of devices you require. Reconnection is as simple as switching your headphones or speaker on again. Sound Track:Double; Wireless Type:bluetooth; WIFI Standard:None Support Memory Card:No; High Definition Support:None; Support Apt-x:Yes Interface:3.5mm; Feature:None; Support AAC:No Color: Black Material: plastic Package Contents: 1 x Splitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.