SEIKO SSB349

 Caliber 8T63 Quartz Movement: ±15 s/mo accuracy; ≈3 yr battery; 24 h hand, small-seconds, 60 min chronograph (1/5 s) & date
 Stainless-Steel Case: 43.9 mm Ø × 12.9 mm thick; 51.1 mm lug-to-lug; hard-coating finish
 Hardlex Crystal & LumiBrite: Luminous hands & indices for low-light legibility
 Silicone Strap: 22 mm lug width; three-fold push-button clasp
 Water Resistance: 10 bar (100 m)
 Additional Features: Tachymeter scale; screw-down case back; 108 g total weight