Reddit mentions of SUUNTO Movestick Mini

A cadence sensor is one thing you don't actually need. What you will need if using a 'classic' trainer is a speed sensor, Wahoo RPM speed sensors are excellent. But if you're buying a trainer from scratch get one which will transmit all this for you. This is about as cheap as they come http://www.halfords.com/cycling/turbo-trainers/trainers/tacx-blue-matic-t2650-smart-turbo-trainer?cm_mmc=Google+PLA-_-Turbo+Trainers-_-Trainers-_-212792&istCompanyId=b8708c57-7a02-4cf6-b2c0-dc36b54a327e&istItemId=atqpqlpqx&istBid=tzxm&_$ja=tsid:94971|cid:868641114|agid:42483203943|tid:pla-329276419814|crid:203186067057|nw:g|rnd:18082421964709484587|dvc:c|adp:1o1|mt:|loc:9046802&gclid=Cj0KCQiAl8rQBRDrARIsAEW_To8ZjkqYombRPVzh0AEFR5dLUyEE1mYBFXnCAdZr6gPFgriBfjhG0mgaAjV5EALw_wcB you won't need any more sensors but keep in mind this trainer does not adjust grade. For that you want the Tacx Flow which is £220.

Bluetooth for PC is not supported on Zwift. So you'll need an ANT+ dongle instead. https://www.amazon.co.uk/Suunto-Movestick-Mini-Pen-Drive/dp/B0050GL5GM/ref=sr_1_1?ie=UTF8&qid=1511169246&sr=8-1&keywords=sunnto+mini+move+stick

Also keep in mind that it doesn't run on every PC or at least not brilliantly.

Another vote for PC. I got the Suunto Move stick and it works great, however, I just noticed that it is now more expensive than the Garmin ANT+ stick. Weird. I mostly like using the PC just because it frees up my phone to screw around while doing recovery spins between intervals.