Specifications: With large digital display, free setting function, suitable for bedroom, office, etc. Clock function: display hour and minute, and 12/24-hour display mode. Date function: display month, day and year (2000-2099). Alarm function: select the alarm switch by turning the alarm switch to set the daily alarm. Temperature function: temperature measurement range -10 to 50 Celsius degree (14 to 122 Fahrenheit), Fahrenheit and Celsius display can be switched. Power saving function: press the MIN/DATE key to turn on the power saving function (on display on sd, off display of sd). Brightness adjustment: three brightness adjustments (light, week, off). Memory function: built-in battery 3.0V. Power supply mode: DC 5V power supply, or 3 x AAA batteries (battery not included). All keys have a key tone. Item Name: Alarm Clock Material: ABS Display: LED Display Built-in 3.0V Battery for Memory Function (Included) Clock Power Supply: DC 5V USB Connection, Or 3 x AAA Batteries (Not Included) Features: LED Display, Big Screen, Temperature Display, Setting Function Size: 170mm x 90mm x 50mm/6.69" x 3.54" x 1.97" (Approx.) Notes: You will find more amazing products if you visit our store. Due to differences in lighting and screen settings, the color of the project may be slightly different from the picture. Due to different manual measurements,allow for slight size differences. Package Includes: 1 x Alarm Clock 1 x Manual in Chinese and English 1 x USB Cable