Casio MRW200H-1EV Diver Review

Casio MRW200H-1EV Diver

The MRW200H is a basic, no frills, low-budget quartz watch with an analog display. Features include a rotating bezel and day/date window.

Note that the MRW200H is not what the majority of people would consider a ‘proper’ dive watch, which is why I’ve been referring to it as ‘diver style’.

It lacks key measures such as a screw-down crown and screw-lock case-back, both of which improve water resistance. A screw-down crown also insures the crown cannot be accidentally pulled out when underwater, an important safety feature to prevent flooding.

The rotating bezel moves both clockwise and counter-clockwise, unlike the unidirectional counter-clockwise only bezels found on a good diver. The unidirectional bezel prevents the watch from ever accidentally displaying less time elapsed than actually has. I like to break my reviews down into sections, covering each part of the watch individually, and wrapping up with my overall impression.

Casio MRW200H


The case is cast from a smooth black resin (read plastic). It’s extremely light weight, leading to the whole watch only weighing 39 grams.

The whole case is a matte black color, with only various lines and angles molded into it to provide visual interest. In the picture above you can see the line that runs from up near the bezel on the sides and then widens toward the top and bottom, leading down to the lugs.

Casio MRW200H case

The MRW200H doesn’t really have traditional lugs. The top of the case curves smoothly over, hiding the springbar attachment points from view.

On both sets of lugs there are these two smooth, circular indentations, which match similar indentations on the resin band. I have a feeling this design element is being utilized to hide the marks from the molding process, and if so it’s very well done. 

Casio MRW200H strap

From the bottom you can see the slot in the case for the strap and spring bars. I haven’t attempted to change out the resin band on this watch, but I’m pretty sure you’d have a very difficult time getting something like a NATO strap to fit through here.

You can also see in the above picture the raised edge on the band, which when the band is curved around on the wrist closes off that gap between the case-back and the band. This is surprisingly well designed, and increases the comfort of wearing the MRW200H.

Overall the fit and finish of the case is quite high for a watch at this price point. It’s smooth without any left over manufacturing marks and looks quite decent for a plastic case.



The stainless steel case-back on the MRW200H is simple and straight-forwards, with no fancy designs present. Held in place with just 4 screws in the corners, it fits perfectly against the resin case.

Casio MRW200H watch case back

The center of the case-back is slightly raised in a circle, with informational text engraved into it. At the very top is the brand name in all caps, ‘CASIO’. Below this we have 5125 within a rectangular box, which marks the quartz module used. Following the 5125 is the model name, ‘MRW-200H’. The next few lines read ‘STAINLESS STEEL BACK’, ‘WATER RESISTANT 10BAR’, “JAPAN MOV’T   EA”, and ‘CASED IN CHINA’.

My first impression of the case-back was that there was no way this watch would be able to handle 100 meters of water pressure, with only those 4 screws in the corners keeping it tight.As I’ll talk about later though, the MRW200H is surprisingly water tight.



The stainless steel crown on the Casio MRW200H is small and cheap feeling, like just about every low-cost watch I’ve handled so far.

Casio MRW200H crown

It’s very basic as far as crowns go, with a coin edge to provide some grip and an undecorated end. The crown is well protected by a blocky crown guard on each side, which at least prevents it from being pulled out from the sides.

The crown spins freely when pushed all the way in, as it is does not screw-down to lock. Pulling it out to the first click allows you to set the day and date, and pulling it out to a second click stops the watch and is used to set the time. The clicks are well defined, and it’s easy to get the function you want.