Voice Control LED Wooden Alarm Clock Digital Wood Despertador Electronic Desktop USB/AAA Powered Clocks Table Decor 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 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)