This new Seiko sport watch is powered by a 22-jewel automatic (self-winding) Seiko movement (4R15A). The hands and dial markers are treated with Lumibrite for excellent glow-in-the-dark brightness. Includes a (protected) screw-down crown, a scratch resistant Hardlex crystal, quickset date, and a see-through, screw-in mineral crystal case back. Minute hand is accented for easy reading.