Although there are a few Skmei reviews on here, nobody has covered this one yet, so I thought I'd have a go.
Obviously this is a cheap copy of a Casio G-Shock Mudmaster GWG-1000GB-1A. It's not a homage per se despite having more basic functions and a different logo. It owes its design entirely to Casio and you wouldn't be wrong to call it a blatant ripoff. Skmei intended this watch to look exactly like a G-Shock from a distance and cannot be given any credit for the way it looks or its dimensions.
Where Skmei does earn a lot of points though is in making a simple and lightweight watch instead of an absolute monster with more functions than you would ever use. So although it has 99% of the looks and 10% of the functions of the heavier G-Shock, this Skmei also saves you wasting considerably more money on gimmicks in the process. Just ask yourself when was the last time you used an altimeter or a barometer, or any of the other things that your G-Shock came with? World time? No. Multiple alarms? No. It doesn't even have a countdown timer. This Skmei SKM-1155 has none of those advanced features which Casio is famous for and maybe, to some extent, is a more honest watch because of what it lacks.
So what does it have? Dual time in the form of analogue and digital displays which are created by joining separate movements in the same 16mm deep case, and as a consequence, aren't synced. It also has a chronograph, an alarm, and an EL backlight. And that's it. If it was supposed to have lume on the hands, it's minimal to the point of non-existence. All the functions are intuitive and easy to use, and setting times and alarms is simple for anyone who has ever used a Casio F-91W or equivalent.
The 60mm diameter case is well made with good seams and gaskets. It isn't made of horribly cheap plastic, and it has a more than adequate stainless steel back with screws, but this is still no G-Shock. I doubt it can be broken very easily, and apparently, the claimed water resistance rating of 50m is legit. There are many videos on YouTube of people putting their Skmei to the test, and it does as well as any normal Casio. I've never babied mine and have used it primarily when I was out mountain biking. It survived admirably without even getting a scratch on its plastic crystal.
I've had my Skmei SKM-1155 for nearly 7 years now (and changed the batteries twice). I used to wear it a lot more before everyone latched onto the brand as a source of amusement because of their inability to pronounce the name. When I bought it from Gearbest, it was around £8, and came branded as either "S-Shock" or "Skmei" depending on the seller. Similar models are also available from Sanda and Smael for the same price today. Skmei now have a newer model with more digital windows (and a "B" at the end of the model number) which doesn't look quite as good as this one to me. If black and gold aren't your thing, there are many other colourways available.
In brief, the Skmei SKM-1155 is a very large, very thick, but lightweight and comfortable Casio G-Shock Mudmaster lookalike with basic ana-digi functions, and most importantly, good timekeeping and legibility with its large analogue dial. The hard to see negative LCD sub-displays are improved by a backlight which you will end up pressing a lot.
Do I recommend the Skmei SKM-1155? Yes. But would I buy the newer model? No.