The Seiko SKA623 is a men's kinetic-powered watch from the Seiko Core collection, featuring a blue analog dial with a date window and a silver-tone stainless steel bracelet. The Kinetic Autoquartz movement converts natural wrist movement into electrical energy stored in a rechargeable capacitor, eliminating the need for battery replacement and providing up to six months of power reserve. A power reserve indicator on the dial lets you monitor the charge level at a glance.

The 44mm stainless steel case is fitted with a Hardlex crystal see-through screw-down caseback, offering a water resistance rating of 100 meters (330 feet), making it suitable for swimming and snorkeling. Luminous hands and hour markers ensure easy readability in low-light conditions. The 21mm stainless steel bracelet secures with a fold-over push-button clasp for a comfortable and reliable fit.