<ul><li><p>Adopt CSR8675 high-end chip design</p></li><li><p>CSR&#39;s latest ANC noise reduction and echo cancellation technology</p></li><li><p>Support TX dual stream, RX multipoint connection</p></li><li><p>SPDIF, I2S audio input / output interface, freely switch</p></li><li><p>Built-in rechargeable battery, battery life is greater than 20H</p></li><li><p>Support SBC, MP3, AAC, apt-X HD, apt-X LL, apt-X audio formats</p></li><li><p>16Mb of built-in eFlash and up to 64Mb of external serial flash memory, digital-to-analog conversion signal to noise ratio of up to 75dB</p></li><li><p>Support TWS (left and right channel separation)</p></li><li><p>Simple connection, no tedious driver and APP download</p></li><li><p><span><strong>Note on using APTX: apt-X HD CODEC is preferentially supported for single connection (the connected device must also support apt-X HD), if it is dual connection, it will automatically switch to SBC CODEC.</strong></span><br/></p></li></ul><p><strong>Specification:</strong></p><ul><li><p>Material: ABS black rubber oil process</p></li><li><p>Bluetooth version: V5.0</p></li><li><p>Support agreement: RX: A2DP AVRCP TX: A2DP</p></li><li><p>Working frequency band: 2.402GHz-2.480GHz</p></li><li><p>Power level: Class II</p></li><li><p>Sensitivity: -80dBm &lt;0.1% BER</p></li><li><p>Signal to noise ratio: ≥75dB</p></li><li><p>Distortion: ≤0.1%</p></li><li><p>Support Dual stream (TX mode): support (one transmitter is connected to two Bluetooth speakers or headphones at the same time use a CODEC)</p></li><li><p>Support multipoint connection (RX mode): support (connect two mobile phones)</p></li><li><p>Codec: TX: apt-X HD, apt-X LL, apt-X, SBC; RX: apt-X HD, apt-X LL, apt-X, SBC</p></li><li><p>Working current: &lt;28mA</p></li><li><p>Built-in battery: 600mAh</p></li><li><p>Charging current: about 200mA</p></li><li><p>Charging time: about 3 hours</p></li><li><p>Life time: RX about 22H, TX about 26H</p></li><li><p>Bluetooth distance: &gt;10M (open space)</p></li><li><p>Charging method: Micro USB 5V / 0.5A</p></li><li><p>Input / output connection: SPDIF interface, I2S AUX interface</p></li><li><p>Compatible: Android, iOS system phones and PAD, and Bluetooth speakers or headphones that support A2DP protocol</p></li></ul>