Made in Switzerland with 25 jewel Swiss mechanical self winding movement Stainless steel case with see-through screw-in caseback allows you to view the movement. Mineral crystal caseback Sapphire crystal with 3 layer anti reflective coating 46 hour power reserve when fully wound. Luminous hands and hour markers Chronograph records up to 12hrs, 30 min, 60 sec Water resistant to 330ft (100m) Leather strap w/ contrast stitching and Swiss Army buckle