Fearture: Smooth: Bluetooth enables you to wirelessly transfer your TV, PC/laptop or other favorite device to your headphones!With our unique two-in-one design, you can also use ZF380 as a receiver with Bluetooth capability to connect your favorite wired speakers, speakers, home theaters, etc. Magic match: The Bluetooth transmitter receiver is compatible with 99% of the TV on the market, and our ZF380 supports fiber/AUX and RCA audio output without additional wire interference. No latency: ZF380 USES low latency technology to reduce Bluetooth latency - providing perfectly synchronized, high-quality sound. LED indicator state: The indicator design allows you to clearly identify the content and connection mode, making it more convenient for you to use.Built-in 300mAh battery, charging about 1.5 hours can be as long as 7-8 hours of working time. Product name: Bluetooth audio transmitter and receiver Output interface: 3.5mm audio + optical fiber Model: ZF-380 Bluetooth protocol: AVRCP, A2DP Bluetooth version: 5.0 Battery capacity: 3.7V/300mAh Multi-point connection: Support one-to-two Forward transmission distance: 10 meters Frequency range: 2.402GHz-2.480GHz Product size: 64.58 x 64.58 x 18mm Color: Black Material: ABS Due to different factory batches, the color and appearance of the product accessories may be slightly different, but it will not affect normal use Package Contents: 1 set of ZF380 wireless fiber audio Bluetooth adapter 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.