Occasion: Bedroom /office Features:1.Voice control ,but need decibels greater than 60db 2.Power supply mode:3AAA battery,but ddon't conclude in the package/also can USB-powered Notes: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Product Introduction: 1.Starting up/Reset: Press Reset button to reset, 0-9 digital screen display 2.Clock Function: Hour, minute and temperature, which can be switched between 12-hour system and 24-hour system 3.Voice Control Function: Under the power saving mode, it can rouse display when voice is in the close range or larger than 60dB. 4.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 5.Alarm Function: Available to set three alarms 6Temperature Switchable Display /; temperature measuring range : (0-50); (32-122) 7.Working Voltage: DC5V/500mA or 4 No.5 cells (AAA)