Features: 1.High integration, and low power consumption. 2.Comply with Bluetooth v4.2 . Support A2DP, AVRCP, HSP, HFP and other protocol frameworks. 3.High replaceability, fully compatible with the Bluetooth modules of other Bluetooth chips of our company, no need to change the design to directly replace. 4.3/5 button input (on/off / pairing / answering / hanging, play / pause, volume +, volume -, previous song, next song). 5.The chip built-in DSP can realize echo cancellation, environmental noise elimination, EQ adjustment sound effects and other functions. specification:The Bluetooth module based on the CSRA64110 chip integrates almost all Bluetooth peripheral components and optimizes the RF and audio performance of the module, providing an easy-to-use solution for Bluetooth product design. Mainly targeted at Bluetooth stereo applications, such as Bluetooth speakers, Bluetooth car kits, Bluetooth headsets, etc. High integration, and low power consumption. Comply with Bluetooth v4.2 . Support A2DP, AVRCP, HSP, HFP and other protocol frameworks. High replaceability, fully compatible with the Bluetooth modules of other Bluetooth chips of our company, no need to change the design to directly replace. 3/5 button input (on/off / pairing / answering / hanging, play / pause, volume +, volume -, previous song, next song). The chip built-in DSP can realize echo cancellation, environmental noise elimination, EQ adjustment sound effects and other functions. The module has its own antenna, good RF distance and consistency. 4M SPI-FLASH. USB sound card function. AUX-IN input switching function. Application areas: Mono Bluetooth headset, Mono Bluetooth speaker, Bluetooth car handsfree, TWS speaker. : Size: Approx. 28 * 13 * 1 mm / 1.10 * 0.51 * 0.04 in Weight: 4 g Package list: 1 * CSRA64110 Bluetooth Module