Side-by-side · source-verified

Seiko 5 Sports SRPD55 vs Seiko Alpinist SPB121

Seiko5 Sports SRPD55$350 USD
SeikoAlpinist SPB121$725 USD

Specifications

Marked rows differ
Case
Case diameter42.5 mm39.5 mm
Thickness13.4 mm
Lug-to-lug46 mm
Water resistance100 m200 m
Movement
MovementAutomatic, hacking seconds, hand-windingautomatic
Caliber4R366R35
Price
Launch MSRP$350$725
Details
Beat rate bph21600
BezelBlack unidirectional rotating aluminum bezel
BraceletStainless steel three-fold clasp bracelet with push-button release, 22mm lug width
CrystalHardlexsapphire
Dial colorBlack
Jewels24
LumeLumiBrite hands and markersLumibrite
Magnetic resistance a per m4800
Model name5 Sports SKX Sports Style
Power reserve hours41
Weight g170

Sources

Verified · 9 references

Every spec on this page was independently checked against the sources below before publishing.