SEIKO SSB405

 Caliber 8T63 Quartz Movement: ±15 s/mo; ≈3 yr battery; 24 h hand, small-seconds, 60 min chronograph (1/5 s) & date
 Case: 41.0 mm Ø × 12.3 mm thick; 48.0 mm lug-to-lug
 Crystal: Hardlex
 Water Resistance: 10 bar (100 m)
 Strap & Clasp: 22 mm lug width; three-fold push-button release
 Weight: 152 g
 Case Back: Screw-down