Seiko Solar

Seiko Solar

SEIKO Solar is a quartz watch which takes its energy from light, and stores it in a self-recharging battery which should never needs to be changed. Being a quartz movement it is very accurate and reliable.
Seiko Solar Movement Description
Good strong sunlight will initially charge your watch. This can take a few days in the UK, but once fully charged they will run for months and normal wearing and exposure to any light always keeps them topped up.