Good collection of functions: Accurate digital display toggles between Time (12hr or 24hr), Temperature (C or F), Date and Year to show enough information you want and give you a good details of you schedual Sound Activated: Voice control power saving (display onSd), just snap your fingers or tap the top of this cube (greater than 60 dB) and the LCD display illuminates, enter into sleep mode after 30s with no any press Three sets of Alarm: 3 groups of alarm to master of your time & avoid missing important things; Alarm Clock with "beep" lasting for 1 minute, press any button on the back can stop it 2 Power Supply Source: Can be powered via USB cable (Included) or 3 AAA batteries (Not included); ABS Plastic material, Small and sleek with wooden-laminate finish, Add a touch of modern to your bedroom, living room or office desk Adjustable Brightness--- 4 levels LCD display brightness available, brightness automatically reduced by half during 18:00-7:00 to avoid dazzling