Features: Clock is powered by 3 AAA batteries (no included) or DC 5V/500mA.Do not show time when power is off, but it is still timing normally.Displays time and temperature with great functions. C/F display of thermometer. Alarm function, three alarms.The gentle LED lights will display in the smooth wood surface, even at night you can clearly see the time.Two modes for your choice--Voice-control mode and Always-bright mode. Voice-control mode is recommended when it's powered by batteries.Specification:Color: Brown, Black (Optional)Material: WoodenTime display: 12-hour or 24-hour modePowered By: 3 x AAA Battery(NOT included) OR USB power supplySize: 10 x 6 x 4cm / 3.94 x 2.36 x 1.57inchPackage Weight: 175gQuantity: 1pcPackage included:1 x Wooden Alarm ClockNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.