Orient Mako RA-AC0Q10N Automatic Diver's Watch Black Dial Silicone Strap 39.9mm 200m

Orient Mako Automatic Diver's Watch

The Orient Mako RA-AC0Q10N is a mechanical diver's watch built around an automatic movement. A 39.9 mm stainless steel case houses a black analog dial with index markers and a date window. The unidirectional rotating bezel and 200 m water resistance suit recreational diving, while the sapphire crystal resists scratches during daily wear.

Upgrade from Quartz or Entry-Level Mechanical

This watch replaces battery-powered quartz models or basic automatics that lack a screw-down crown and 200 m rating. The jump is worth it when you need ISO-style dive timing via the unidirectional bezel and a sapphire crystal that maintains clarity after repeated salt-water exposure. Buyers who require a helium-escape valve or a depth rating beyond 200 m should look elsewhere.

Strap Swap and Crown Discipline

The silicone strap uses a standard buckle, so changing to a different 20 mm band is straightforward with a spring-bar tool. The screw-down crown must be fully tightened before water entry; forgetting this step is the most common cause of moisture ingress. No special tools are required for routine strap changes or time setting.