Rolex Air-King 40 mm

The Rolex Air-King 40 mm, reference 126900-0001, has a case in steel measuring 40 mm across. The smooth bezel and monobloc middle case give the watch a plain, functional profile, and the black dial sits under a scratch-resistant sapphire crystal. Luminous hands and indices keep the large hour numerals legible, and a central seconds hand runs off the perpetual, self-winding calibre 3230, which stores approximately 70 hours of power reserve. Rolex certifies the movement as a chronometer. The screw-down crown, part of the Oyster case construction, holds the watch to a 100 metre water resistance rating. A steel Oyster bracelet closes with a folding Oysterlock safety clasp fitted with an Easylink comfort extension link.