CSR chipset, class 2.1+EDR Bluetooth audio module

Device features

1. Fully qualified Bluetooth v2.1 + EDR
2. Next generation, high-quality, low-cost, mono headset solution with
3. extremely low-cost Ebom
4. World’s longest talk time: up to 18 hours time from a small 120mAh battery
5. Proximity pairing (heaset initiated pairing)
6. Advanced multipoint
7. Programmable audio prompts
8. Built-in echo and noise reduction
9. Integrated CSR AuriStream low-power codec
10. Support for secure simple pairing
11. Best-in-class Bluetooth radio with 7.5dBm transmit power and -92dBm
12. receive sensitivity
13. Pin compatible with BlueVox2 QFN
14. Configurable mono headset software
15. HFP v1.5 and HSP v1.1 support
16. A2DP v1.2 for high-quality mono music streaming (KMBT009D version)
17. Integrated 1.5V and 1.9V linear regulators