SEIKO SRPK99K1 Seiko 5 Sports SKX

This Seiko watch features a 4R39 mechanical caliber with a 24-hour display. It has an automatic winding mechanism and can be hand-wound. The watch is water-resistant up to 10 bar and has a Hardlex crystal. It runs for about 41 hours on a full charge and has a daily time deviation of -15/+25 seconds.

• The description claims that a mechanical watch functions without a battery and has a larger time deviation compared to Quartz, Kinetic, or Spring Drive watches.