Ratio 200m Diver Quartz Chronograph Sapphire (48HA90-17-CHR-BLK): In a serious color and shining metal
The black-on-steel is totally contrasting and very modern and upfront, completely different from the earlier watches from Ratio. The bonuses come in the form of an enhanced durability, accurate functions and a very neutral colorway.
Facts before figures
Seekers of serious dive watches are always on the hunt for something that’s robust; looks brutal (somewhat) and qualifies as a tough everyday watch that takes you from office (if you are not into a suit-and-tie profession requiring fake smiles) to the bar and to the beach and further into the sea with an effortless ease. It should look right in terms of looking modern and there must be something to strike a difference with the rest without compromising on that diver feel, including the performance. Enhanced, it proves all the better.
The Ratio 200m Diver Quartz Chronograph Sapphire (48HA90-17-CHR-BLK) watch has massive appeal as much as its specs and therefore, its prospects. More importantly, you may wear the watch for extended periods without burdening the wrist.
Figures define the watch
The caliber 0S10 has two variants (0S1A and 0S1F) that came up later on; for the Ratio 200m Diver Quartz Chronograph Sapphire (48HA90-17-CHR-BLK), it is the actual OS10 that ticks. It shows hours, minutes, regular seconds (small seconds @ 6:00) and lapse of time for any particular event. The central, large hand shows advancing chronograph seconds while the sub-dial @ 12:00 records every 60 minutes throughout 12 hours (sub dial @ 9:00). It also shows date (@ 3:00) and loss or gain of time for this Miyota caliber never goes beyond +20 seconds/month.
Small tricks involved
- The Ratio 200m Diver Quartz Chronograph Sapphire (48HA90-17-CHR-BLK) watch has a chronograph seconds-hand with a quick reset to zero, driven by the Miyota Heart-Cam Reset It’s based on the original 1838, Austrian chronometer design introducing the split-second mechanism using a heart-shaped cam (a rotating disk shaped to convert circular into linear motion). With all due respect to all that charm and usefulness of the column wheel, the cam replaced the complex mechanism turning chronographs more affordable. The second push-button is precisely for the easy reset from stop to start.
- A battery change might require chronograph hands to be recalibrated (back to zero), for which, pull the crown to its time-setting position (III) and press the top pusher. It will advance the chronograph seconds-hand. Long-pressing will speed the hand up. Upon reaching zero (i.e. 12:00), push the crown back in.
Should you buy it?
The Ratio 200m Diver Quartz Chronograph Sapphire (48HA90-17-CHR-BLK) watch is certainly not a love-at-first-sight piece for all. You need to look more closely to reap the rewards. Like making the chronograph, the tachymeter and the unidirectional rotating bezel work in sync. The total absence of colors (save one bright streak) exposes the details and emphasizes upon the play between its shiny and matt surfaces.
When the light plays over the Ratio 200m Diver Quartz Chronograph Sapphire (48HA90-17-CHR-BLK) watch, its seamless flow forming the base for the pushers and the crown makes it – well, a beautiful thing! That curve is luscious, perfect and with plenty of visual softness. You just don’t get that easily with steel at such a low price-point.