This product MH-M28 is a low-power Bluetooth design solution Supports Bluetooth 4.2 transmission and two-channel stereo lossless playback. After the module is connected to Bluetooth, Quickly realize Bluetooth wireless transmission, which is very convenient. In an open environment, the Bluetooth connection distance can reach 20 meters. Widely used in various Bluetooth audio reception, various audio DIY modifications, etc. The appearance and color of different batches of products may be different, which will not affect the use. Type:A:Type C/B:Micro-Interface Colour:Black Material:PCB Package Contents: 5 * Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.