1.Large Display and Multi Function: Digital alarm clock with large LED display, which lets you check the time clearly at a glance even it is far from you. Display time, temperature, date, and day of the week on the same screen. Can be wall mounted or placed on a tabletop. 2.Adjustable Brightness: LED alarm clock is equipped with a light sensor and 4 level brightness display, L1 brightest, L2 second brightest, L3 slightly bright, L4 dimmest. Suitable for bedrooms, offices and other indoor venues. 3.Dual Alarms and Timing Function: Set 2 alarms based on your habits. Maximum timer of 99 minutes and 59 seconds, countdown timer up to 99 minutes and 59 seconds. LED desk clock allows you to have enough and comfortable sleep. 4.12H 24H and Switch: Press down button for switching between 12 or 24 hour format. Press up button for switching between Celsius and Fahrenheit. It is a great alarm clock for heavy sleepers adults, slso the best gift choice for friends and relatives. 5.USB and Battery Powered: There are 2 power supply modes of clock. It can be powered by USB cable. When powered by battery (not included), clock has a time memory function, no need to reset after power failure. The large digital clock is simple and easy to set up. Item Type: Digital Alarm Clock Material: ABS Weight: Approx. 316.00g / 11.15oz Battery: 1 x Button Cell, CR2032 (Not Included) Package List 1 x Digital Alarm Clock 1 x User Manual 1 x USB Cable