Seiko YN84 automatic movement with power reserve Case diameter: 48 mm Case height: 17,5 mm Bronze case An enhanced hardened 3.5 mm thick mineral K1 crystal Exhibition case back Screw-in crown 18 Swiss-made tritium tubes: 13 pcs. in indexes-reflectors on the dial, 4pcs. on 3 hands and one in sapphire capsule in bezel Custom leather and silicon straps interchangeable by just one screw driver 1 leather strap and 1 silicon strap included in the package Whole watch set is packed to the original XL-size dry box Due to the heavy watch box, a handling fee of 10,- EUR will be charged to the shipping costs * These watches are manufactured in genuine bronze. Bronze is a highly machinable copper alloy that ensures the highest quality standards of case construction in your new Vostok-Europe watch. As copper and tin are key components of this alloy's construction, the final composite metal is subject to oxidation. As such, after a few weeks of wear, these watches will develop a "patina." This patin