It's a silly gimmick, of course, but I'm impressed by how quickly they got these out and how well it works for the price. Considering the Casio is nearly always out of stock and quite expensive, this is a good alternative. 

Pros: fully functional for time, date, and stopwatch. Also $5 is a lot easier to justify than $125 for what is more like a novelty trinket than a real watch. It seems to be quite waterproof too, as I've been washing my hands with it on, no problem. Surprisingly readable, too. For the size, the LCD is quite clear, as good as most Casios. Having only the 4 digits means it's not too bad-- larger than the screen on a lot of ana-digi watches. 

Cons: unlike the Casio, it has no backlight, 4 digits instead of 6, can't be adjusted in size, and most egregiously, seems to have no way to change the battery. I get that compromise for something so small, but it's a shame they decided to make these essentially disposable. There's also just a stopwatch and a countdown timer. No alarms, and the countdown doesn't beep so its usefulness is... Questionable. More of a reverse stopwatch. 

What do you think? Fun toy? Dumb future e-waste? Useful timekeeping device? I've been using it to show the date when I wear a no date watch and have a stopwatch when I don't wear a chrono. Kind of compliments a simple analog watch in a way. I harbor no delusions that it doesn't look totally crazy though. 

Anyone else have the Skmei ring?