Model: BR03Interface: auxWhether plug and play: plug and playExternal power supply: No external power supplyTransmission rate: 24Effective working radius: 12Bluetooth standard: 5.0Working frequency: 2.4Packing informationProduct size: 5.5*2.5*1.5cmPacking size: 8*8*2CM weight.: 43gProduct List 1. Host2. Chinese and English manual3. 3.5mm adapter4. Micro-USB charging cable5. Neutral English packagingFeatures:1. Bluetooth 5.0+EDR2. Bluetooth transmission distance 12m3. Support Bluetooth hands-free call function4. Support TF card playback5. Support phone functions such as answering, hanging up, rejecting, calling back, etc.6. Supports echo cancellation and noise suppression (CVC) technology during a call7. 5 minutes after disconnecting the Bluetooth connection, the product will automatically shut down.8. Charging time: about 1.5 hours Working time: about 8 hours9. Support Bluetooth stereo music DSP technology10. Battery capacity: 200 mA