Best Alarm Clock Battery Backup

LLOYTRON "Daybreak" Alarm Clock Radio with Buzz Alarm or Radio - Snooze Function - Sleep Timer - Rotary Tuning and Volume Controls - Mains Operated - AM / FM Radio - J2006BK - Black

GOLOZA Digital Alarm Clock for Bedrooms with Modern Curved Design, Conspicuous Blue LED Numbers, 6 Levels Brightness, 2 Volume, 3 Alarm Tones, Snooze, Power-Off Memory, 12/24H, Bedside Clock

aboveClock Digital Alarm Clock, Wooden Bedside Clock with Large LCD Backlit Display, Temperature, Snooze Function, Brightness Sensor, 3 AAA Battery Operated【Battery NOT Included】

ANJANK Bedside Radio Alarm Clock - 0-100% Dimmer, Dual Alarm with Weekday or Weekend Mode, USB Charger, Easy to Set, Mains Power with Battery Backup, Large Display Easy to Read Across The Room

KWANWA Cordless Digital LED Alarm Clock With Big 1.2'' LED Time Display,AA Battery Operated Only,Can Be Placed Anywhere Without A Cumbersome Cord (Green display)

FAMICOZY Simple Easy to Use Digital Alarm Clock,Small Compact,Auto Dim at Night and 6 Manual Brightness adjustments,Mains Powered,Crescendo Alarm with Snooze,12/24hr,Black

Groov-e Rise - Digital Alarm Clock with FM Radio, LCD Display, & Dimmer Function - 12hr/24hr Time Modes - Mains Powered, Backup Battery System - Black

OCUBE LED Digital Alarm Clock with 5 Optional Alarm Sounds, USB Charging Port, Full-Range Brightness Dimmer, Big White Digit Display, Snooze, Adjustable Alarm Volume, Mains Powered

i-box Alarm Clocks Bedside, Radio Alarm Clock, Mains Powered or Battery, FM Radio, USB Charging Port, 5 Step Dimmable Display, Non Ticking, LED Display (Black)

Mesqool Loud Alarm Clock with Bed Shaker for Deaf, Heavy Sleepers, Hearing Impaired,Dual Alarm,USB Phone Charger,Large LED Display,Big Snooze Button,DST 12/24H,Battery Backup, Adjustable Dimmer(Blue)