I've only had this watch for three days now, but I highly recommend it. I'm writing this in hopes of helping others choose this watch. Backstory (skip if you don't want to read): I've had two other Samsung galaxy watches over the years. The s2 and the s3 frontier. I got the s3 as a gift and just a week ago, it unexpectedly broke. I bought this as a replacement. The only things I've only ever used my watches for has been for tracking my cycling (I go everyday) and for telling the time and controlling music. The previous two have worked perfect for this. Sizing: the s2 and s3 were 42 mm and 46 mm respectively. I always thought the s3 looked a little big on my wrist, as my wrist is about 6.3 inches in circumference. I had a lot of trouble deciding whether to buy this watch in 40 mm or 44 mm, as many people on reddit recommend 40 mm for wrists below 6.5 inches. I ended up buying the 44 mm, and I think it looks great. The pictures don't show it, but I think it fits my wrist perfectly. The only problem is the band for the watch is on the tightest setting. I might even puncture a hole to have a tighter fit. Sports tracking: I don't run or do many other sports, but I do go 15 miles a day via bike. The s3 worked great for that, and this watch does as well, so far. The only problem I've had is with the auto pause feature (when off the bike to take a water break, the watch is supposed to automatically pause). It's very finicky, but that's the only complaint. It takes my heart rate accurately and I synced my Samsung health with strava via the phone app to track my biking. Battery life: I've only had it for a few days, but these past two days I've tried charging it to full in the morning and seeing where it was at night. Keep in mind that I go cycling in the morning and use GPS the whole time. For both days, it drained about 30% battery (from 100 to 70ish) for a day that was 7:30 am to 11:30 pm. I think that's pretty good, and I charge it while I'm in the shower and wear it to sleep for sleep tracking. The charging is relatively fast, enough for it to almost be 100 before I sleep after a 15 min charge. Durability/ waterproofing: I heard a lot of people say that they use this watch for swimming, but I'm too scared to take a 250 dollar device into the pool. I wouldn't personally recommend it. The durability seems good though, but I haven't run into any problems. Accessories: I have a few recommendations so far. I bought a screen protector and a ringke bezel protector. Both are present in the photos and I think it looks great, as well as providing looks. I highly recommend both, as it gives me comfort that I won't break the watch. On my old s3, I scratched the bezel a lot, but that one was metal and this one isn't. Also, for watch faces, the one I have is called minimal data weather. I also recommend iris25. The apps on the store for the watch are cool and all, but they don't serve much functionality in my eyes. The charging base is a little inconvenient as it's just a small disk, so I recommend getting a base that it can click into so it stands like the s2 and s3 charging bases do. Overall review: I'm very happy with the watch and I recommend this to anyone needing a watch. Read the other sections for my personal views on the watch, and I hope everyone has an amazing day. Hope this helped. Update: After two weeks of having the watch and using it everyday, the back panel/plate came off. The adhesive stopped sticking well. Luckily, I was within the return period and I replaced it with a new one. If the same issue occurs again, I'll be leaving a one star but for now, it mightve just been a fluke with that watch. Still a good watch.