Features 1、Pen Holder Design: This LED clock features pen holder design, which can be applied to store your pen, glasses, ruler and pencils. 2、Temperature Display: This desk clock allows you to know about temperature change and understand temperature condition. 3、12/24 Hours: This digital alarm clock supports 12/24 hours mode conversion, and it also contains time memory function. 4、Multi Function: This LED clock provides time, date, and temperature display, and it supports countdown and birthday reminder function. 5、Adjustable Brightness: This pen holder alarm clock has 2 brightness modes, meeting your different needs. Specification Item Type: Pen Holder Alarm Clock Material: Plastic 12/24 Hours: 12/24 Hour System Time, Perpetual Calendar Display Snooze Alarm: Snooze/Alarm Function Brightness Control: 2 Brightness Modes Temperature Display: ℃/℉, Range: Minus 10℃ to 50℃ Pen Holder: Desk Pen Holder Battery Type: 3 x AAA Batteries (Batteries Not Included) Power Supply: Battery Powered (Battery Not Included) or USB Plug Powered (If Using Battery, the Screen Will Turn off After 15 Seconds, and when Plug in, It Will Be Steady On) Package List 1 x Pen Holder Alarm Clock 1 x USB Cable 1 x User Manual