?Power Cord Operated with Memorized Battery Backup?-- This clock is operated by included USB power cable with US adapter. 3* AAA batteries ( NOT included ) needed for storing time and alarm settings in case of power outage. With backup battery power source only, the screen will go blank and only light up 10 seconds by touch light button. Just “Add to Cart” right now to get: 1* alarm clock, 1* USB power cable with US adapter and 1* EN user manual. ?USB Charging Port ?- The alarm clock designed with one USB charger port provides the convenience for charging your phone or other device safely while you sleep. ?Dual Alarm with Snooze Function ?- Clock allowing you to set 2 alarms for different personal purpose with snooze function, it allowing you to set 0 to 30 minutes of extra sleep time; The big touch button helps you easily turn off the buzzer, you can set snooze time according to your sleep habits, really suitable for heavy sleepers. ?Time, Temperature and Humidity Detect?-Large size mirror LED screen can display time in 12/24 format; Clock also built-in temperature and humidity sensor, it can monitor the indoor temperature with ? or ? display; It is not only a clock, but also a great indoor thermometer for your bedroom. ?Easy Operation Clock with Touch Button?- Intuitive touch setting button, easy for kids, seniors and the elderly experience zero stress when setting the clock.The simple brightness adjustable design allows you set the brightness of display by easy turn wheel. Illuminated big LED digits ensure the time is easy to see for people.