Item Type: Digital Alarm Clock Material: ABS Battery Type: 3 x AAA Batteries (Batteries Not Included) Temperature Range: Minus 10?? to 50??, Celsius And Fahrenheit Supported Humidity Range: 20% to 95% Automatic Screen Off: 4.5V Battery Power Supply, Auto Screen Off after 15 Seconds Inaction. Dimming: 3 Dimming Mode 5 Function Buttons: MODE, ALARM, SNZ / LIGHT, UP, DOWN Night Mode Setting: 18:00 to 07:00 LED Indicator: When Using The Usb Cable, The LED Indicator Will Always Be On. 1?��Curved Screen: This digital alarm clock features curved LED screen design with mirror like visual effect, and large fonts are perfect for time display. ?2?��12/24 Hour System: This LED clock adopts 12/24 hour system, which can be easily switched according to your preference, easy to operate. ?3?��Smart Light Sensor: This digital clock is designed with smart light sensor, LED light dims at 18:00 to 7:00 o'clock and brightens at daytime. ?4?��Multi Function: This bedroom clock supports alarm and snooze function, with temperature(?? and ��H) and humidity display, meeting your basic needs for daily life. ?5?��Wide Application: This small digital clock with large curved LED screen is perfect for desk, bedroom, living room, office, dormitory, etc.