The Sun and Moon Analogue clock gives you the features of a traditional clock but with the added benefits of visual prompts for the time of day. With clear images of both the sun for day and moon for night this is perfect to help those who struggle to know what time of day it is. It can help greatly with daily routines and sleeping. Quartz movement. Diameter 31.5cm. D5cm. Batteries required 1 x AA (not included) . Manufacturers 2 year guarantee.