7.48 in extra large multi-funtional mirror alarm clocks one click on/off screen 4 adjustable brightness options Multifunction ,app alerts promptly notify you of unexpected changes historical data quickly read your data with graph,charts no subscription no extra charge needed sharing share with family friends of anyone you want 7.48 in extra large multi-funtional mirror alarm clocks can be used as make up mirror in Large snooze button 5 minutes snooze WIFI connection auto-sync time and date,no need manually adjust,keep accurate time