Additional Details ------------------------------ Product description: ●Caliber: F6724 ●Accuracy: +25 seconds to -15 seconds per day ●Drive time: 40 hours ●Case material: Stainless steel ●Glass material (front): Inorganic glass ●Glass material (back): Inorganic glass ●Luminous light: - ●Band material: Stainless steel (SUS316L) ●Band width: 20mm ●Clasp: Push-type three-fold clasp ●Weight: 113g ●Vertical diameter: 44.0mm ●Horizontal diameter: 38.4mm ●Thickness: 12.5mm ●Water resistance: 3 ATM ●Magnetic resistance: JIS Class 1 (4800A/m or higher) ●Other features: Automatic winding, 22 jewels