Seiko H855

Seiko caliber H855 is a solar-powered quartz analog-digital movement with a six-month power reserve. It functions as a chronograph and includes diving-specific features: digital depth measurement to 80 meters, a dive log storing up to 100 dives with auto-start at 1.6m and auto-end below 1.5m, plus rapid ascent warnings. The movement is manufactured in China and powers Seiko Prospex PADI special edition models.