Chronograph model. Unused item [Movement] Quartz (battery operated): Average monthly difference ±15 seconds Chronograph function (1/20 seconds, 12 hours meter) Lumibrite [Waterproof function] Reinforced waterproof for daily life (10 ATM) [Accessories] SEIKO exclusive BOX Warranty Instruction manual Case shape: circular Windshield material Hardlex Display type analog Clasp: three-fold method Case material stainless steel Case diameter/width 38.5 millimeters Case thickness 9.6 millimeters Band material/type stainless steel Band size standard for men Band width 20 millimeters band color silver Dial color red Bezel material stainless steel Bezel function Tachymeter bezel Calendar function Date only movement quartz Water pressure resistance 100 m ​