?Features : LED Digital Clock for Bedrooms, Multiple Nature Sounds Silent Date Time Temperature Clock with Night Mode for Heavy Sleepers. ?Multi-Functional: Time, Clock alarm, Temperature display, Night mode, Mirror. ?2 Ways power source supply: USB powered or 3 x AAA batteries powered. (If both used at the same time, USB can not charge batteries, the batteries will are usetime memory function if the USB cable is power-off.) ?Temperature mode (°C or °F) for choice: Measuring range: 0? -50? / 32° F-122°F. (Built-in temperature sensor, need take a while to display the correspondingly indoor temperature.) ?Snooze function: Snooze interval time can be set from 5-60 minutes as your need. ?Silent sound clock: The Clock tread on the world that run silently, never disturb your dream. ?Easy to set: With five function button (Mode, Alarm, Snz/Light, UP, Down) long press or short press buttons to set. ?Portable: Perfect for home, school, office, travel, etc also can be used as a small clear mirror. ?Warm Tips:- When battery powered, You need to press any button to see the time. And the clock will be dark after 5 seconds to save battery power. ?With time memory function and the LED will light on for 5 seconds when you press SNZ/LIGHT button. ?When USB cable power supply, The clock will keep bright all the time (also can adjust the light brightness). ?It can be powered via plug the USB cable into your TV/PC/USB Adapter/Phone Charger/Any USB outlet/etc. ?Package Included:- 1 Mirror Alarm Clock ?Night Time Sensor ?It has numerous other functionalities like a night time sensor which shows you the time even in darkness and a temperature display that informs you about your indoor temperatures. ?Perfect Gift ?Delicate and practical, ideal for birthdays, Christmas, NewYear, etc.