The Poly Sync 20 is a versatile full duplex speakerphone for meetings that doubles as a battery bank and personal speaker. Simple and streamlined, with capacitive touch buttons and intuitive design, you won't really need instructions on what each thing does (but please still read). Larger than your favorite phablet and as thick as your favorite mechanical keyboard, it easily fits into my laptop bag and goes with me everywhere. The included case is nice and keeps everything together and protected between meetings. It is IP64 dust and water-resistant, so you don't have to be so fragile with it. Take it where you need to go instead of your phone or device.
The kit includes a lanyard and USB-A to USB-C adapter, which fits in the neoprene-like canvas hybrid sleeve. The sound clarity is exceptional, but the soundstage feels tiny, in my opinion. It would be nice to hear a room-filling sound, but that is me being a sound snob. The microphone picks up voices up to 7-8ft, so the speaker is designed for small rooms under 13'x13', so keep that in mind. It utilizes Bluetooth 5.1 for excellent stability and sound quality; it will be an instant upgrade in audio quality compared to your cell phone, laptop, or tablet.
The app I could find that works on android is the Plantronics Hub app. There is a firmware update needed, so get that done ASAP. The overall speaker volume is too low, under 50%, with the steps in sound increments not noticeable until you reach maybe 75%. The microphones are smart and switch to the closest speaker for the best sound quality. The battery is rated up to 20hrs, which is more than enough to get through a meeting-packed workday. You have extra juice to recharge a phone or Bluetooth earbuds using the USB-A port with the charging cord of your choice.
The added functionality of being a battery bank is helpful when your phone is dying, and you need a little extra juice to make it through a call. As a portable personal speaker, it is easier to keep around in my laptop bag since it can serve more than one purpose. I plug it into my laptop, and it works as a teleconference device should. Connect it to Bluetooth on the laptop, and it works - just wireless. The Rocket button is programmed in the Plantronics Hub, but the Microsoft Teams button I could not get to work, whether USB or Bluetooth. That is fine since I already have my meeting on my PC, so I don't have to worry about one touch of Microsoft Teams. It is all about options; the business professional will see the value here. We use Zoom and GoTo Meeting at work, so it isn't a big deal for me. This works for any platform without software. You can add software for a different experience.
This speaker is exceptional at voice reproduction and keeping things business-focused. Still, I would say this isn't getting any awards for music playback as it sounds too small and lacks meaningful bass and low-end frequency reproduction. There must be a way to block or disable touch buttons while in a call to avoid accidental touches when moving the speaker. I don't remember how often a button would be accidentally touched while grabbing it.
Aside from those recommendations, this is an excellent speakerphone with great voice reproduction. This is a winner in my book if you are in the business of calling or doing lots of speakerphone calls. You'll get value because it is also a battery bank to save you in a pinch with a dead phone. You also get an instant upgrade over any tech built-in to your laptop, phone, or tablet. Add a kickstand, wireless charging capabilities, and a USB-C port for the all-time perfect device.