Perfect Watches
 Synthetic sapphire crystal, sunray movement.Movement: CAL.3H45Model: 1915Drive mode: double mainspring drivePower reserve: 72 (hours)Vibration frequency: 28800 (times/hour)Winding method: manual windingCase diameter: 45-30mmCase Thickness: 11.9mmStrap width: 20-26mmCase Material: 316 stainless steelStrap Material: RubberWaterproof depth: 5ATMGlass material: synthetic sapphire crystalBuckle style: Butterfly double snapCrown: Straight