Features:
Support all devices with 3.5mm jack ports 
One-button switch to switch between transmitter and receiver mode
Built-in battery, fast-charging
Plug and play, no need to install
Operation mode:
Bluetooth Transmitter ( TX ) : Add wireless function to your TV, PC, MP3 player, DVD player to enjoy wireless music and sounds.
Bluetooth Receiver ( RX) : Turn any speakers, headphones, stereo system to Bluetooth enabled.
Specification:
Bluetooth specification: V3.0
Bluetooth profiles: A2DP and AVRCP
Operating distance: 10m and more
Working time: TX mode, up to 8 hours; RX mode, up to 6 hours
Charging time: About 2 hours

Package weight: 0.091 kg
Product Size(L x W x H): 5.00 x 3.00 x 1.00 cm / 1.97 x 1.18 x 0.39 inches
Package Size(L x W x H): 13.00 x 7.00 x 5.00 cm / 5.12 x 2.76 x 1.97 inches
Package Contents: 1 x Transmitter Receiver, 1 x USB Cable, 1 x 3.5mm Audio Cable, 1 x English User Manual