Vostok-Europe - N-1 Rocket Chronograph - Black IP Case and Bracelet w/ Black Dial - Solid stainless steel round case, 42 mm. 10 ATM water resistance. Special screw crown. Tachymeter. 1/20 sec chronograph with retrograde demo, timing up to 59 min 59 sec. SuperLuminova indexes on the dial and hands. Rotating bezel with minute couner. Screw-in back cover with engraved serial number. A-grade black PVD plating of cases and bracelets. Stainless Steel Bracelet with Black PVD Plating