Highlights include:
Built-in omni-directional microphone
Hear and be heard with a 360-degree microphone that picks up sounds from any angle.
15-hour rechargeable battery
Up to 15 hours of talk time on a single charge.
Smart button (off by default)
Interact with your voice assistant (smart phone dependent) or make a speed dial with the one-touch Smart button. Must be configured in the PC app Jabra Direct.
Digital Signal Processing technology and Wideband Audio/HD Voice
Crystal clear sound without echoes or distortions – even at max volume.
Jabra Link 370 USB Adapter (Bluetooth Class 1)
Easy Bluetooth connection and call control integration with your softphone system.
Bluetooth Class 1
Easy Bluetooth® connection to tablets and mobile phones. Range of up to 30 meters on Class 1 devices.
Finally...
Every call I'm on with the Speak 510, I tell the other party or parties that I'm on speaker and they all say it sounds great. You can also just plug it into anything with it's "always connected" wrap around USB cord and it instantly takes over the sound. Love it. If you need something very nice and portable (it's only about 4.5" across and about 1" thick and comes with it's own soft case), affordable, and that sounds better than speakers 3 times larger that cost 10 times more, then you can't go wrong with the Speak 510. It retails for around $105-$110 but worth much more. Get one and carry it with you everywhere. You won't be sorry.