Features: Size: 150*70*45MM Starting up/Reset: Press Reset button to reset, 0-9 digital screen display Clock Function: Hour, minute and temperature, which can be switched between 12-hour system and 24-hour system Voice Control Function: Under the power saving mode, it can rouse display when voice is in the close range or larger than 60dB. Three Display Modes: dp-1: Display time or date and temperature in turn; dp-2: maintain current set display; dp-3: only display time and temperature Alarm Function: Available to set three alarms Temperature Switchable Display ?/H; temperature measuring range : (0-50); H (32H-122H) Power supply mode:3AAA/4AAA battery,but ddon't conclude in the package/also can USB-powered Notes: Dear customer, when you insert the battery, please turn off the voice control button first, it will always be on, when you turn on the voice control, it will go out after 5 secondsWhen powered by USB cable, the LED light will stay on. If you use battery and open the voice control, the lights will wipe out later, the battery could be used about 20 days , but if you close the voice control, the lights will always on, then and the battery could be used about 1 day 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Customers who receive the product can check the manual first, if you have any questions, please contact us first, we will solve the problem for you, best wishes Thanks