1It sends the stereo sound of the TV to two pairs of headphones simultaneously. 2Operate via USB power to permanently connect the transmitter to the TV's USB port. 3The portable battery allows up to 10 hours of use between charges and is suitable for use with a tablet. 4Strong connectivity. You can quickly reconnect as needed. 5Simply through the headphone interferce, fiber output or composite o output. 6It wirelessly transmits o to your headset and partners via cable without the need for a splitter. Condition: 100% Item Type: Bluetooth Transmitter ReceiverColor: Shown as Picture Bluetooth Version: V4.0 Input Voltage: DC5V Input Current: 500mA Power: 185mw/h Battery Capacity: 650mA Working Time: 2-3h Effective Distance: Approx. 5-8 Meters/16.4-26.25ft 1 x Host1 x Instruction Manual1 x Data Line2 x Power Cord