I've always been an electronics geek and I get their watches and exchange for an honest review and and not compensated for them in any way but I would not hesitate to tell anyone at all not to purchase these watches they're fantastic. I love the fact that it sync's with my watch extremely fast and I love the look and feel of it. And also in searching for these you'll notice that when someone either is at the end of stock or if it's misprint through Amazon they sell these watches extremely extremely cheap and when you catch somebody who is grab it !!!!. Because I've seen these watches that will go for $80 or even more sometimes being liquidated for 20 bucks. I grabbed for them at that price one for myself one for my brother and a buddy of mine and they love the watch. You can tell just by feeling them that they're a well-built quality watch and you can't even buy a watch band for the price of what they're selling them for at that price and they are still worth it for the original price.
Comes with a good app. I only purchased mine for telling the time and getting phone notifications since I drive for a living 8 hours a day sometimes more and I can't always get my phone out. I can see the text no problem and I'm a senior citizen and also the volume on the watch is good enough for me to hear in the house if I don't have my phone on me whereas I can answer my watch if I'm in the other room 20 ft away from my phone. The battery life is superior to many of the name brand watches that cost hundreds of dollars. For the prices of these watches at any price you won't be disappointed

Watch works as advertised and is pretty accurate on BP, Heartrate, and other measurements. Battery lasts at least a few days even when using all the options. It's a bit bulky for a petite lady like me but I need it to be tough because I'm really active.

Kosper Tank S2 watch has an awesome 1.32" AMOLED display.

First impressions;
* Really good build quality
* Display has good brightness - 16 million colors and 499 pixel per inch and awesome 1000nits. This is flagship watch level quality.
* 60Hz refresh rate which makes the screen lighting fast.
* Sleeping track - I haven't tested it with other watches yet.

It's perfect for Men or women who do not require a larger screen. It fits well and looking small size. Me and my wife both liked it. It's half price than other popular companies watch which has similar functionality.

Blindly go for it. It's premium watch.

I've been using it for a few weeks. Mostly for running, walking and hiking and gps is pretty accurate surprisingly. Price is a bit high considering it's not a major brand. But if you get it during discount, that will be a good deal.

Thankyou very much. This watch is awesome. Works well, easy setup.