1、Portable: Compatible with Bluetooth 5.0, small size, light weight, easy to carry, whether on the road or in the office. 2、Invisable Design: It is difficult to detect its existence on the computer. Wireless file sharing, music streaming, video chat, printing, games, etc. 3、Strong Applicability: An ideal wireless solution for various situations and applications. Wide compatibility, compatible with most Bluetooth devices. 4、With LED Indicator: TX: transmission mode, red LED light is on; RX: receiving mode, blue LED light is on. 5、Strong Compatibility: Support wireless transmission from mobile phones and tablet computers with Bluetooth to wired stereo speakers. Item Type: Bluetooth Adapter Colour: Black Material: ABS Bluetooth Version: 5.0 Operating Range: Up to 10m/33 Feet (No Obstructing Objects) Bluetooth Pairing Name: KN330 TX Mode: Transmitter Mode, Red Led Light is on RX Mode: Receiver Mode, the Blue Led Light is on 1 x Bluetooth Adapter 1 x Audio Line 1 x Manual