Occasion: Bedroom /officeFeatures:1.Voice control ,but need decibels greater than 60db2.Power supply mode:3AAA battery,but ddon't conclude in the package/also can USB-poweredNotes: 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 display2.Clock Function: Hour, minute and temperature, which can be switched between 12-hour system and 24-hour system3.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 temperature5.Alarm Function: Available to set three alarms6Temperature Switchable Display ?/?; temperature measuring range : ? (0?-50?); ? (32?-122?)7.Working Voltage: DC5V/500mA or 4 No.5 cells (AAA)Two kind size clockChoose the suit size for youL size clock :15cm/5.9in*8cm/3.15in*7cm/2.75in