It’s a small visual change, but one that makes considerable strides towards giving the Promaster Mechanical Diver 200m its own stylistic character without harming overall legibility. Movement, Citizen caliber 8204, automatic with hand winding, running at 21,600 vph, 42-hour power reserve. Not all products are regulated by the Financial Conduct Authority and FOS protection will not be extended to unregulated agreements. A design element that stands out is the distinctive, serrated style bezel that was inspired by a fugu, the Japanese name for pufferfish. Titanium is 5 times harder than stainless steel yet 40% lighter, making the bands comfortable and resilient at the same time.

PROMASTER DIVER AUTOMATIC | Citizen Watch UK PROMASTER DIVER AUTOMATIC | Citizen Watch UK

To pick just one example, the company's 1985 Aqualand, with its analog-digital display, depth gauge, and dive-specific functions, was the first dive watch of its kind and the first that was an all-in-one, complete diving instrument. Citizen opts for a tapering, notched black rubber strap here, with a no-frills classic pin buckle in Super Titanium. Completed with an engraving of a pufferfish on the case back and presented in a dive tank style box.

This gloss surface is highly reflective when viewed from certain angles, but also offers the only hint to one of Citizen’s modern durability improvements. Best characteristic of watch: Lightweight, handsomely contoured Super Titanium case, solid movement.

Citizen Promaster Mechanical Diver 200m Watch Review: Citizen Promaster Mechanical Diver 200m

That history has inspired our new Promaster Mechanical Diver and given it the affectionate nickname, Fujitsubo – Japanese for barnacle. With such an elemental form, the Citizen Promaster Mechanical Diver 200m’s case may well be in danger of feeling plain or oversimplified, but the use of a contrasting polished dive bezel works to give the design a slightly more refined character overall. At 41mm-wide, the Super Titanium case of the Citizen Promaster Mechanical Diver 200m is a fairly average-sized diver design on paper, but wears smartly compact on the wrist thanks to a handful of factors. Worst characteristic of watch: Both the bezel insert and the gloss black dial feel rather unrefined; standard vintage-style diver design may fail to stand out with some enthusiasts.Rather than the familiar crosshatch “Tropic” strap texture that would likely have been fitted to the original Challenge Diver, Citizen opts for a visually simpler set of raised dots that nonetheless introduce some welcome texture to the design. Second Chronograph — easily look back at previous lap times, have analogue and digital displays, measure 1/1,000 second and more. We stand by the quality and craftsmanship of our products with our 30-day money-back guarantee, and a 5-year limited warranty. Featuring a 3-piece, 44mm case, sapphire crystal and a silver-tone stainless steel case and bracelet, the black and blue rotating bezel with easy-grip aluminium ring surrounds the black dial and luminous hands and markers, while the case back features an engraving of a pufferfish.