Bluetooth UC headset & a BT Transmitter Base (built-in ring speaker) 

Headphone: 
1) Chipset:QCC3024 V5.2 (headset), 
2) Support Profile: HFP,HSP,A2DP,AVRCP, AAC
3) Directional Noise Reduction Microphone & DSP Crystal Clear Sound.
4) Voice assistant activation & dual connection 
5) One Button to Mute Mic talking.
6) Support answering / ending softphone calls (Lync，Microsoft Teams, Skype for Business, Cisco Jabber) in most computers.
7) "Busy" light LED indicator during phone talking.
8) Battery Capacity :180 mAh (headset). 
   Working Time: About 22 h;  Standby Time: 200 hours
9) Weight: 84g
Base: 
1) Chipset: ATS2831 V5.0 (base) 
2) Support Profile: HFP,HSP,A2DP,AVRCP
3) Operation Range：Up to 10 m
4) Operating voltage range：4.75V-6.4V.