Seiko Prospex Mens Silver S/S 42.8mm SNE591PSeiko Prospex Solar Divers Mens 200m water resistant watch SNE591P Seiko SNE591P features the Seiko solar power V157 movement with a 10 month power reserve (once fully charged). Calibre V157 watches have an accuracy tolerance of + 15 seconds a month (at a temperature range of 10 60 degrees). This watch has a 42. 8mm case in stainless steel with a matching bracelet and uses Sapphire Crystal. As a 200m water resistant dive watch, the SNE571P has a