Very powerful piece of technology, but.Upside: Notification Feature: I like the notification feature. Rather than having to check your phone, the watch gives you a cue to check your phone. nice.Downside: I would have thought a sport watch would have all sorts of split times, lap times, memory times, etc. Maybe this does and I haven't figured it out, or maybe you need yet another app.Upside: Changeable Faces: I like them. There are only a few that I might use, but..nice.Downside: Too many phone apps. There's the Gear Sport app, which only tells you Battery life, Storage and RAM. The rest of the app is basically advertising/ marketing other apps for the watch. Then, you need the Samsung Health App if you want the benefit of being able to see steps, sleep patterns, etc. (unless you want to pull out a magnifying glass and try to decipher it from your watch face).Not Up or Down: The Health App (on the phone) requires you too enter many things manually, which I understand is a limitation of a watch. But, to be fair, I'm not going to weigh each component of the meal I'm eating in a restaurant and then ask the waiter to ask the chef about the important ingredients that I can't readily identify (salt or sugar, for example). And fortunately, maybe, I don't eat at fast food places which post 'Nutrition Facts'.Downside: Memory: Of the 4 GB on the watch, 2.4 GB are taken up by 'System and apps' which you can't remove. It kind of reminds me of when phone makers would put out a 16 MB phone, but only 2 MB were actually available for music, photos, etc. (slight exaggeration).Upside: I like the weather info on my wrist. I like knowing the chance of rain and the UV index (?) although an allergy index would be nice too.BIG Downside: The heart rate monitor isn't even close: I happen to be getting a check up four days after receiving this watch as a gift. My MD was taking my pulse and I said 'Hey, my new watch does that'. So, I used the watch and he used my wrist and and a clock. The watch said 84 BPM and he clocked me at 68 BPM. quite a difference for a resting heart rate. He mentioned that these devices are notoriously inaccurate. So, the pulse rate monitor is a neat feature, but from a medical perspective they can be misleading and dangerous. There's probably some disclaimer in the user agreement about this.Downside: If you shower or workout, the pulse sensors have to be cleaned.Downside: I get a 'Great Workout' (or something like that) notification every time I take a shower. That makes me feel good, but it's entirely inaccurate. I'm in the shower for 5-7 minutes and not moving that much. Maybe it's thrown off because my hands are moving. but my body isn't.Downside: The watch doesn't accurately count how many floors you have climbed. It would be nice to know (accurately), but inaccurate information isn't very helpful. Today, I've climbed one flight of stairs. which must mean I'm in my attic.GREAT Upside: I like the prompts that I've been inactive and I should do 'Torso Twists' (I hope they have or add a few more/ different desk area exercises).Recommendation: The Altimeter is a nice app. I don't understand why the gauge which runs around the dial goes from -2600 ft to +28,000 ft. I'm not a deep see diver and I'm not climbing Everest, so why not make that scale more relevant to the heights that I'm actually likely to be located. Anyway, that seems like a simple software fix. As an aside, while I've been typing this I'm now 9 feet higher in elevation. That might explain why I got credit for a flight of stairs.. The Alti Barometer is also a battery hog, using up 16% of my last full charge. So, I just removed that app.Recommendation: Put a UV exposure tracker on the watch. Some people get too much and some don't get enough.I think a lot of these issues can be fixed with software updates and feature improvements, but like a lot of tech stuff, once it's out the door they're on to the next product and not improving something that they've already sold. We'll see.