Feature: 1. 2 in 1 BT5.0 adapter can be used as transmitter and receiver, with strong performance and stable signal. 2. Built-in noise-reduction microphone, it supports hands-free calling with clear sound, giving you a nice calling experience. 3. With dual output interface design (USB/AUX), you can enjoy the fun of wireless audio. 4. Small size, increased play/pause button, more convenient to use. (The button is only valid in receiver mode.) 5. USB universal interface, plug and play, suitable for TV, computer, laptop, speaker, headset, etc. Specification: Features: 2 in 1 BT5.0 adapter can be used as transmitter and receiver, with strong performance and stable signal. Built-in noise-reduction microphone, it supports hands-free calling with clear sound, giving you a nice calling experience. With dual output interface design (USB/AUX), you can enjoy the fun of wireless audio. Small size, increased play/pause button, more convenient to use. (The button is only valid in receiver mode.) USB universal interface, plug and play, suitable for TV, computer, laptop, speaker, headset, etc. Specifications: Color: Black Material: ABS BT Version: BT5.0 Effective Working Radius: 10 Meters Transmitter Mode: Blue LED Light on Receiver Mode: Red LED Light on Item Size: 50 * 25 * 10mm/ 2.0 * 1.0 * 0.4in Item Weight: 8g/ 0.3oz Packing List: 1 * BT5.0 Transmiter & Receiver 1 * Audio Cable 1 * Manual Package List: 1 * BT5.0 Transmiter & Receiver 1 * Audio Cable 1 * Manual