Current Production
Seiko 5 Sports
SEIKO SRPK99
MSRP
$400 USD
Verified Aug 18, 2026
Case diameter42.5 mm
Lug-to-lug46 mm
Thickness14.2 mm
Case materialStainless steel
CrystalCurved Hardlex crystal
Water resistance100 m
MovementAutomatic, Caliber 4R36, 21,600 vibrations per hour, 24 jewels, Power reserve: approximately 41 hours
Calibre4R36
Power reserve41 hours
DialBlack
Bracelet or strapStainless steel bracelet
Specifications as published by Seiko →
Last verified Aug 18, 2026