Digital Alarm Clock, RTSU Smart Clock, Touch Button, Built-in Lithium Battery, Backlight With Low Light Sensor, 7/5 Day Alarm Mode, Progressive Alarm, Snooze Month Date Temperature Display -[SMART TOUCH]---Touch sensor button conveniently on top for a 5-second screen lighting and snooze -[RECHARGEABLE & CORDLESS & LOW BATTERY WARNING]---Built-in 600mAh Rechargeable Lithium battery by DC 5V USB charging. Cordlessly alternative to the wind-up, the battery operated, and the typical electric clocks. Small LED indicator on the front warns you in case of low battery, never worry about losing yout time -[SIMPLISTIC & COMPACT DESIGN]---Large screen and big numbers. Lightweight and in rectangle shape with rounded corners. Premium ABS plastic material and simplistic white high-tech finish fits in perfectly with your desktop or nightstand and easy to read the time -[SMART BACKLIGHT]---With low light sensor, the screen will glow softly and automatically when room light is low or non-existent, making its display easy to see in the dark -[5/7-DAY ALARM & MULTI-FUNCTIONAL]---3 Alarm options: 5-Day setting, 7-Day setting, or no alarm at all. Convenient for students or the ones who have normal work schedule and have the weekends off. 3 Groups of Alarms, Progressive Alarm, Snooze, Calendar (MM/DD), Switchable Time (12/24) & Temperature ( & )