Full set standard: 1 m165 bluetooth headset, 1 ear hook, 1 charging line, 1 manual, 1 packaging box.
Product description:
Adopt all - series MTK stereo headset solution
1. Support bluetooth 4.0+EDR protocol
2. Support A2DP V1.3 AVRCP V1.5 
3. Support HFP V1.6 and HSP V1.2 
4. Support SPP protocol
5. Integrated 48MIPS dual-MAC DSP processor
6. Built-in charging IC
7. Support noise reduction and echo cancellation
8. Voice prompt support
9. Support UART and I2C interfaces
10.6mm*6mm QFN40 package for business bluetooth headset
Chip function support
Bluetooth 4.0 stereo bluetooth headset; 
2. Volume adjustment;
3. Selection of upper and lower tunes;
3. Voice prompt;
4. Call number broadcasting; 
5. Point-to-point connection; 
6.IOS power display; 
7. Answer/reject incoming calls;
8. Replay of the last number;