Hello, Unfortunately, I don't know. I recommend reading the product data sheet in the German-language section of www.jabra.com or calling support. Very nice hotline near Rosenheim in Germany, by the way. Many greetings

You can connect both devices to the laptop via Bluetooth and then switch between both devices in the audio settings. However, a call would be set on hold and you might also have to change the settings in the software (Teams, Skype). Headset on spider does not work, at least not that I know of.

This question has already been answered and can be found on the Jabra Speak 510 MS.

Yes USB dongle included in 510+ MS.

Yes, you can switch it off.

We use both the Jabra Speak 510+ MS and the Jabra Speak 810 MS with teams and both work well.

This will obviously depend on the voice strength of the people present, but you can be heard correctly at 2 metres. Afterwards, participants on the line usually complain that they can't hear anything. This is why the Bluetooth model is essential: you can do without the Jabra so that the presenter has it in front of him/her.

Hello Yes, it is. Battery life, sound quality, workmanship, everything top!