Battery Backup?Lami product large digital wall clock has a battery backup function will automatically display the wall clock setting in case of power outage. It is a perfect Christmas gifts for senior care and in home care necessity. Digital Photo Frame Function?Input the photos and video (UP to 720P) on to an SD card root directory (NOT in any file folder), and press OK to play or pause. Press the MENU button to exit. Simple to Set Up?Digital clock wall with date and day has a simple operation interface that is convenience for dementia, Alzheimers', elderly, visual Impairment, old people, Memory Loss. Auto-Dimming& 5-Brightness Levels?Digital alarm clock not only allow manual adjustment of brightness levels, but also automatically adjust led brightness through the built-in light sensor in bedroom. Automatic dimmer from 7pm to 7am. 7-in Digital Wall Clock?Excellent smart clock for seniors who have trouble remembering what day it is. Large digital calendar clock is bright and legible which is very easy to read from across the room. 4-Colors Large Clock Displays?With 4-colors clock displays is perfect for a quick glance to know the day and time, works great for retired individuals/dementia/old people/grandapa who may not remember the date or day of the week.(Useful for anyone- NOT just seniors!).