Features: Supports APTX and APTX LL playback. Supports multi-point connection (connect two mobile phone application voice and music connection) Unique dual path 3.5mm audio output interface design, can connect two speakers at the same time. NFC touch control, a touch NFC connection can realize bluetooth pairing. Supports Hands-free call, one button to answer, voice answer and reject calls. Built-in 300mAh battery, endurance time is more than 10 hours. Simple connect without any driving or downloading App. Adopt the latest sixth generation CVC voice enhancement technology of CSR to implement noise reduction and echo cancellation. Support CSR Secure simple pairing, Proximity pairing and CSR Proximity connection. Support SBC, MP3, AAC, APTX, aptx-ll audio format. Built-in 16-bit stereo codec, digital mode conversion signal to noise ratio up to 85dB. Support TWS (left and right channel separation) Specifications: Condition: 100% Brand New and High Quality Material: Plastic Color: Black Size: Approx. 6 x 6 x 1.2cm / 2.3 x 2.3 x 0.4inch Model Number: CSRA64215 Type: Bluetooth V4.2 Supports Protocol: A2DP 1.3, AVRCP 1.6, HFP 1.6, HSP 1.2 Working Frequency Range: 2.402GHz-2.480GHz Power Grade: Class II Receiving Sensitivity: -85dB at 0.1% BER Working Current: within 25mA Charging Current: 200-300mA Built-in Battery Capacity: 300mAh Charging Time: 2hours Endurance Time: More than 10hours Bluetooth Distance: within 10m / 32.8feet Charging Interface: Micro USB 5V/0.5A Output Interface: 3.5mm Stereo Jack Suitable for Computer, for Android/for iOS System Smartphone, for Pad & other Bluetooth Devices Weight: Approx. 80g Packing List: 1 x Bluetooth Adapter 1 x USB Cable 1 x Connection Cable 1 x User Manual 1、Supports APTX and APTX LL playback. Supports multi-point connection (connect two mobile phone application voice and music connection) Unique dual path 3.5mm audio output interface design, can connect two speakers at the same time. 2、NFC touch control, a touch NFC connection can realize bluetooth pairing. Supports Hands-free call, one button to answer, voice answer and reject calls. 3、Built-in 300mAh battery, endurance time is more than 10 hours. Simple connect without any driving or downloading App. 4、Adopt the latest sixth generation CVC voice enhancement technology of CSR to implement noise reduction and echo cancellation. 5、Support CSR Secure simple pairing, Proximity pairing and CSR Proximity connection. Support SBC, MP3, AAC, APTX, aptx-ll audio format. Built-in 16-bit stereo codec, digital mode conversion signal to noise ratio up to 85dB. Support TWS (left and right chan