All speakers are sell as UC and MS variant:
MS - certified for MS Teams, additional button Microsoft Teams
UC - stands for Universal Communication - optimised for softphones applications
Models:
510
172 g
BT 4.2
diameter 12 cm
710
mic quality similar to 510, mic located on center - better 360 capture
speaker quality significantly better than 510
BT dongle
built-in stand
daisy chain 2 units for larger conferences (still one mono channel)
298 g
BT 4.2
slightly bigger diameter than 510 (13,1cm)
750