describe: Product name:Digital Alarm Clock Color:as picture show Material:MDFandPVC Size:11.7x7.8x7.8cm/4.6x3.07inch Occasion: bedroom/office Features: 1. Voice control. but requires a decibel greater than 60db. 2.Power supply mode: 3AAA battery. but no conclusion can be drawn in the package / can also be USB powered product description: 1. Power on/reset: press the Reset button to reset. 0-9 digital screen display 2. Clock function: hour. minute. temperature. can switch between 12-hour system and 24-hour system 3. Voice control function: In the power saving mode. the display can be awakened when the voice is close or greater than 60dB. 4. Three display modes: dp-1: display the time or date and temperature in sequence dp-2: keep the current setting display dp-3: only display the time and temperature 5. The temperature can be switched to display / temperature measurement range: (0-50) (32-122) The package contains: 1xElectronic clockBatteries not included Warm Tips: 1.Due to the light and monitors effect. colors may have lightly difference. 2.Please allow slightly size errors due to manual measurement. Thank you for your understand 3.1mm=0.039inch.