<B>To make the clock always display the time, please DOUBLE press the “DOWN” button to get it into standard mode. Set the value to “--:sd” to turn off the sound control mode. <Br> USB outlet powered is recommended for daily use. Batteries are for back-up or travel use. With the LED bulbs, the digital clock consumes more power and drains out the batteries within a week. </b><Br><Br><Br> <B>Multiple Functions</b><Br> <B>Energy-saving mode</b><Br> The led alarm clock can be smartly waked up by sound-activated or touched. For example, You can light up the display by clapping your hands ( or any sound louder than 60dbm) or by tapping the clock. If you'd like the clock to stay on, please press “DOWN” button to turn off the energy-saving mode when displays "--:sd".<Br><Br> <B>Time memory function</b><Br> When the power cuts out, the built-in cell can still preserve the time settings and alarm settings. <Br><Br> <B>2 Time and Temperature display format</b><Br> The wood digital alarm clock supports 12 or 24 Hours selectable time display format and ℃and ℉temperature display format. Choose what you like! <Br><Br> <B> Safety 2 Power Supplies </b><Br> The cube alarm clock can be powered by USB cable or 3 AAA batteries(not include). The DC-USB supply is recommended for environment-friendly and stable(batteries could run out of juice); but the it can be a battery operated travel alarm clock as well <Br><Br> <B>Specifications: </b><Br> LED Light Color: White <Br> Power Supply: USB cable or AAA batteries (not included) <Br> Net weight: 3.6oz<Br> Product dimension: 2.52*2.44*2.52in<Br> Shipping weight: 5.2oz<Br> Package dimension: 3.15*3.15*3.54in<Br> USB cable: 3.28ft<Br><Br> <B>Package Contents</b><Br> 1 × Digital Wooden Alarm Clock<Br> 1 × USB Cable<Br> 1 × User Manual<Br> <Br><B>Kind reminder: </b><Br> If you have any problems about how to set the clock or the clock itself, just feel free to contact us. We provide warm and friendly customer service 24/7.