Overview: The BT Transmitter is specially designed for the Audio Devices (such as TV and PC) without BT function. You can connect the BT Transmitter to the audio devices via the USB plug, changing these audio devices into BT-enabled ones, and making it work with BT-enabled headset and speaker. Features: Connect to the non-BT audio devices via USB plug, make it able to work with BT-enabled headset and speaker. BT 5.3 provides super stable and fast audio signal transmission, allowing you to enjoy better music and clearer sound. Supports effective range up to 10m / 33ft, depending on specific circumstance and the transmitter device. USB plug and play, no external power needed. Compatible with TV, laptop and desktop computer. Compact size, with storage box, portable and lightweight, very easy to carry and store. Specifications: Model Number: OY313 BT Version: V5.3 Transmission Distance: 10m (no obstacle) Plug: USB Frequency Range: 2.402GHz-2.480GHz Working Voltage: DC4.2-5V Max. Power: 0.3W Color: Black Item Size: 21*12*4.6mm/0.82*0.47*1.81in Item Weight: 1.7g/0.06oz Package Size: 7.1*7.1*2.0cm/2.79*2.79*0.78in Package Weight: 31g/1.09oz Package List: 1 * BT Transmitter 1 * User Manual