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 : 320 mAh (headset). 
   Working Time: About 40 h;  Standby Time: 200 hours
9) Weight: 120g
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.
5) With a built-in ringing speaker. It will ring when a call comes from the connected computer, but not Universal Compatible. Currently, it is ok with calls from Lync，Microsoft Teams, Skype for Business, Cisco Jabber, but might vary due to computer system /software ver. issue.
6) Weight: 113g