2in1 Bluetooth transmitter and Bluetooth receiver, 3.5mm audio adapter. The product is shipped based on the color or size of the main image of the product page; if you have special requirements, please leave us a message. *****1. Output Interface: 3.5mm *****2. Audio Bluetooth Protocol: AVRCP, A2DP *****3. Bluetooth: V5.0 *****4. SNR: >90dB *****5. Battery Capacity: 3.7V/200mAh *****6. Transmission Distance: 10 m *****7. Frequency Range: 2.402GHz-2.480GHz Features: ***** 1. This portable, lightweight wireless audio transmitter & receiver is an ideal wireless audio solution for a wide range of situations and uses. ***** 2. Transmitter mode: Wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers. ***** 3. Receiver mode: Wirelessly streams audio from your Bluetooth-enabled phone, tablet, or computer to your speakers or headphones. ***** 4. Bluetooth 5.0 supports stable and effective wireless transmission. ***** 5. Wide Compatibility: With the included 3.5mm cable and 3.5mm to RCA cable, this adapter can widely be used on your computer, laptop, home stereo system, headphones, smartphone, MP3 player, CD player, etc.