Bests & Worsts Reviews from Amazon

I got one early from the brick & mortar store that has a temporary exclusive on Vivosmart. HIGHLY recommended. I've had a couple of Smart Watches (the original Sony SmartWatch, the Pebble) and I've had a Jawbone UP (previous model, no Bluetooth). This is every bit as comfortable as the UP. The heart monitor that's bundled is the best bit one I've ever seen, way better (and more comfortable) than an older Polar one I had. I would say the biggest negative on this band is the 7 day battery life, versus the new UP's 14 day, but plugging it in once a week is not that bad, honestly, and is in line with my Pebble, and the original UP band. Now for the Pros. 1) Compatible with ANT+ bike sensors (speed only, not cadence, hopefully cadence will be an upgrade). Fitness bands tend to be for all activities except biking, so this is a huge plus. 2) Garmin Connect. If that's not your preferred site, it may not be a plus, but for me, it is. I already have a Garmin GPS for my Bike. Having all my other data on one portal is a plus for me. 3) Water proof. Wear it swimming or in the shower. Big plus, especially if you have triathlon aspirations. :) 4) OLED touch screen. When in range of your smart phone, displays notifications (Android or iPhone, Bluetooth 4 required). Love it. See who is calling, text messages, app notifications, etc. When your smart phone isn't in range, it still tracks your activity. The Cons: 1) Wish the bike sensor support worked with cadence, not just speed. Hopeful for an update. 2) Battery life on the low side compared to other bands. But again, if you want some "smart watch" type functionality, this is a good trade off for me. Why not a smart watch? Too many trade offs. 1) Price 2) They scratch 3) requires charging every day 4) not designed for fitness 5) no bike compatibility 6) many aren't water proof This is comfortable enough to sleep in (important for sleep tracking), lasts a week on battery, works with all my exercise types, and continues to work 100% when my phone isn't around (except phone notifications of course). You can even sync it to a laptop and never connect to a phone if you were so inclined. Being compatible with ANT+ (and shipping optionally with a great heart monitoring band) is a plus, and the rudimentary cycling support is a step up from the competition.