1、Key for touch button, C/F can be switched, there are clock mode, alarm mode, sleep mode. 2、Night mode function, in the middle of the night can also see the time and temperature. 3、Usb cable can be used for charging, battery can also be used, two ways to choose. 4、Three brightness Settings, low, medium and high brightness with your choice. 5、Touch the function button (MODE, UP, DOWN), convenient and fast. The digital indoor comfort level thermometer helps you regulate your favorite spaces, taking indoor comfort and relaxation to the next level in your home. Accurate indoor temperature, allows you to easily and fast check best conditions with its professional temperature sensors.   Features: 1. Key for touch button, C/F can be switched, there are clock mode, alarm mode, sleep mode. 2. Night mode function, in the middle of the night can also see the time and temperature. 3. USB cable can be used for charging, battery can also be used, two ways to choose. 4. Three brightness Settings, low, medium and high brightness with your choice. 5. Touch the function button (mode, up, down), convenient and fast. 6. Display temperature,time simultaneously. 7. Large-character LCD display.   Specification: Condition: 100% brand new Weight: 184g Material: ABS Size: 195*75*45 mm / 7.67* 2.95* 1.77 inch (approx) Color: white, blue, red Temperature Measurement Range: -10℃ ~ 50℃   Package list: 1 x Digital LCD thermometer   Notice: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm. Please replace the battery if the battery had run down after months. There's NO included Battery.