with 4Level Adjustable Alarm VolumeWhen you and your partner have different schedules it is very ideal to separate your wakingup time from that of your partner by setting double alarms time. The alarm will last 60 mins if no one stops it. Alarm volume buttons are on the side of the easy to recognize and set at any time. 4 Levels are available for setup and very loud for heavy sleepers.7.5 Large LED Display Easy to Read You can see the time clearly from different angles of your bedroom with this large number alarm clock even though a slight glance from a far distance. A very easy alarm clock for elderly and the shortsighted. Very useful big number nightstand table living room hotel or office.5Level with 24 Hours/12 Hours/DST This features 5level dimmer to freely adjust the brightness of the digits on the screen to adapt to the brightness of your surroundings which has a significance to eyes protecting. While you are sleeping you can turn down the brightness to avoid dazzling light and get good sleep. The 12/24H time format display and DST setting are very easy to be adjusted at any time for your preference. with Battery Backup Settings The plug in alarm clock is only outlet poweredAC V to support the whole functionsthe digital display USB phone charging dimmer. 2pcs 1.5V AAA backup batteries not included are only used to memorize time and alarm settings. Once unplugged the time display will go blank and other functions will not be effective but the alarm function can still work with battery and will wake you up on time.Simply Pause Alarm with Big Snooze and Intuitive Buttons with clearly marked button even kids and the elderly can set it by themselves without user manual. You can easily feel the big snooze button and press it to pause the alarm to get extra 9minute nap. Press ALARM PAUSE to turn off the alarms and it will still sound the next day. Press ALARM OFF to turn off the alarms completely and the alarm icon on the screen will disappear.