1、Adopt Bluetooth 4.2 lossless sound quality connection, effective distance of 20 meters, convenient and practical, enjoy the beauty of music. 2、Suitable for connecting to the power amplifier board, enabling the audio input of the power amplifier board to realize Bluetooth wireless connection. 3、Have strong Bluetooth signal reception (20 meters unobstructed connection), lossless sound quality, simple and practical 4、The power input uses for Android Micro USB interface, the voltage is 5V, and the audio output uses a 3.5mm audio head, which is easy to use. 5、With stable and excellent performance can be used to replace old or damaged module. Item Type: Bluetooth 4.2 Lossless Receiver Module Model: XH-A250 Audio Input: Bluetooth input (Approx. 0 - 20m / 0  - 65.6ft) Audio Output: 3.5mm audio cable output Power Interface: For Android Micro USB Appearance Size: Approx.35 x 35 x 8mm / 1.4 x 1.4 x 0.3in Installation Hole Distance: Approx. 9mm / 0.4in Approx. 17mm / 0.7in Approx. 3mm / 0.1in 1 x Bluetooth 4.2 Lossless Receiver Module