B20 Bluetooth 5.0 Audio Transmitter Receiver 2 in 1 Adapter

• Exquisite appearance

• Adopt CSR8675 high-end chip design

• CSR's latest ANC noise reduction and echo cancellation technology

• Support TX dual stream, RX multi-point connection

• SPDIF, I2S audio input/output interface, can be switched freely

• Built-in rechargeable battery, long battery life

• Support SBC, MP3, AAC, apt-X HD, apt-X LL, apt-X audio formats

• 16Mb built-in eFlash and up to 64Mb external serial flash memory, digital-to-analog conversion signal-to-noise ratio up to 75dB

• Support TWS (left and right channel separation)

• Simple connection, without any driver and tedious downloading APP

Specification:

• Model No: B20

• Bluetooth version: Bluetooth V5.0

• Support protocol: RX: A2DP AVRCP TX: A2DP

• Working frequency band: 2.402GHz - 2.480GHz

• Power level: power level 2 (Class II)

• Sensitivity: -80dBm<0.1%BER

• Signal to noise ratio: ?75dB

• Distortion degree: ?0.1%

• Support Dual stream (TX mode): Support (a transmitter is connected to two Bluetooth speakers or headphones at the same time to use a CODEC)

• Support Multipoint (RX mode): Support (connect two mobile phones)

• Codec: TX: apt-X HD, apt-X LL, apt-X, SBC; RX: apt-X HD, apt-X LL, apt-X, SBC, AAC; APTX. (Note for use: Priority support for apt-X HD CODEC for single connection) (the connected device must also support apt-X HD)

• Working current: <35mA

• Built-in battery: 600mAh

• Charging current: about 200mA

• Charging time: about 3 hours

• Life time: RX about 18H, TX about 22H

• Bluetooth distance: >10M (open place)

• Charging method: Micro USB 5V/0.5A

• Input/output connection mode: SPDIF interface, I2S AUX interface

• Compatible: Android, iOS system mobile phones and PAD, and Bluetooth speakers or earphones supporting A2DP protocol to connect and use

• Body: 6.6*6.6*20cm

• Weight: 147g