YM86-620A636

These watches were designed for using in different extreme activities – from deep diving to space explorations and have the following beneficial features:

• A 49 mm stainless steel case, water resistant up to 200 meters.


• An automatic helium release valve. It is integrated in the watch case spring-loaded one-way valve activated when the difference between the inner and the outside pressure reaches a critical level. This function is useful for commercial divers operating at great depths using diving bells with breathing gas mix inside.


• An enhanced hardened 3.5 mm thick mineral K1 crystal


• Variety of functions provides by different available movements – from clear 3-hand automatic and 1hour chrono-watches to complicate Perpetual calendar+24H-chrono+ Sound alarm movements.


• Swiss-made tritium tubes mounted vertically of on the dial ring. Such position of tubes provides additionally advanced illumination of the time indication.


• Custom leather and silicon straps interchangeable by just one screw driver.


• An original construction heavy duty stainless steel buckle


• The whole watch set packed into an original VE waterproof and shock-resistant plastic box, which can be used during extreme activities to keep valuable possessions safe.

Size: ? 49mm x 17,5mm

Movement: S.Epson YM86