Features 1、Embedded ARM926EJ‑S core,4KB Lcache and 4KB Dcache. Supports stereo codecs. Supports for HFP, HSP, A2DP, AVRCP, and SPP profiles. 2、Noise reduction and cancellation. Multi‑band equalizer configuration. Support packet loss hiding. Multipoint HFP and A2DP. Support for voice prompts. 3、The integrated lithium‑mode battery charger supports 300 mAh fast charge and over discharge protection. 4、Support audio input audio equipment, wireless audio receiving and transmission. Support automatic search connected Bluetooth devices, wireless audio transmission. 5、Built‑in enhanced signal transmission circuit, faster and more stable continuous sound connection. Bluetooth 5.0, low power consumption. 6、Compatible with dual lossless audio formats. AUX OUT, Earphone is supported. Automatic memory connection function, easier operation, more convenient connection. 7、Built‑in battery, super long battery life. Smart compatible for Android/IOS phones/Pads, and all Bluetooth audio devices. 8、Support to connect 1 mobile phone. Product connection is simple, without any tedious driving and downloading of APP. Specification Condition: 100% Brand New Item Type: 2 in 1 Receiver Transmitter Material: ABS Color: As Pictures Shown Weight: Approx. 79g/2.8oz Support Protocols: A2DP, AVRCP, HFP, SPP HID Receiving Operating Current: ≤ 43mA Transmitting Operating Current: ≤ 60mA Standby Current: < 18mA Battery Type: Polymer Lithium Battery Built-in Battery: 600mAh Charging Current: 300mA Endurance: > 8h Bluetooth Distance: > 10m/32.8ft (Open Space) Charging Mode: Micro USB 5V/0.5A Output Connection: 3.5mm Stereo Interface Input Connection Mode: 3.5mm Stereo Interface Compatible for Android/IOS phones/Pads, and all Bluetooth audio devices. Audio Devices with Audio Input Interface Package List 1 x B6 Bluetooth 5.0 Adapter 1 x 2 In 1 Audio Cable 1 x 3.5 mm Audio Cable 1 x Micro USB Power Cable 1 x Manual