Ritmix RH-437 BTS

Ritmix RH-437 BTS specifications:
- Bluetooth 2.0 with support for HSP, HFP, A2DP, AVRCP
- frequencies: 2402 - 2480 GHz
- 10 hours in active mode
- standby mode: 120 hours (headset), 100 hours (transmitter)
- range of 20 meters
- built in omnidirectional microphone
- automatic switching between music / conversation
- USB 2.0, audio 3.5 mm jack
- Lithium-polymer battery + lithium-ion battery
- battery capacity: 300 mAh (transmitter), 280 mAh (headset)
- weight: 16 grams (transmitter), 63 grams (headset)