Movement: Cal:ZM02 28800Hz/ Self-winding mechanical Case size: 39mm x 50mm Case thickness: 10.5mm Case material: 316L stainless steel Windshield: Sapphire crystal Back: See-through back (sapphire crystal) Water pressure resistance: 3ATM Weight: 96g Power reserve: 40 hours Warranty period: 24 months Belt material: Fluorine rubber Belt mounting width: 18x26mm Buckle: D buckle Luminescence: Swiss Super Luminova Limited production: 2999 pieces (total of all colors) Made in Japan *Assembled in the atelier of ZEROO TIME