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This bluetooth module is designed specifically for bluetooth speaker products. With high integration£¬ small size£¬ just with a few external components to achieve its powerful. With the A2DP£¬ AVRCP transmission and remote control protocol any Bluetooth source device (such as: Bluetooth-enabled mobile phones£¬ PC Bluetooth adapter£¬ etc.) to establish a connection to the wireless receiver to achieve high-quality stereo audio stream£¬ and audio player remote control. Features: Bluetooth 2.1 + EDR compliant. A2DP v1.2£¬ AVRCP v1.0 and HFP v1.5 profile. Integrated stereo ADC and stereo DAC. Integrated five bands hardware equalizer. Integrated digital equalizer for stereo line in. Integrated full duplex hands-free speakerphone. Built-in lithium battery charging circuit(Charge current is 250mA). Applications: Bluetooth stereo speaker£¬ Bluetooth stereo headset£¬ Bluetooth control and multimedia hybrid