Features: brand new and high quality Plug and for play, lossless sound quality, stable transmission, with button control. Using Bluetooth-compatible 5.0 main control chip, the transmission effect is good, and the stability will be better. With button control, it can control up and down music, volume increase and decrease, for play, pause, switch machine, etc., and reserve high and low level control interfaces, which is extremely playable. Micro 5p interface power supply, ordinary mobile phone charger charging line can be used. The Bluetooth-compatible audio signals of mobile phones, laptops, and tablets can be transmitted to power amplifiers, active speakers and other devices through this Bluetooth-compatible audio receiver. The audio interface can also be connected to ordinary 3.5mm earphones, which can change ordinary earphones into bluetooth-compatible earphones. Specifications: Material:ABS Size:Approx.3x3cm/1.18x1.18inches Package Includes: 1x Bluetooth-compatible 5.0 Audio Receiver note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.