Digital Blue Message Board Clock Alarm Temperature Calendar Timer LED Light Features: Multiple functions of time and temperature display, alarm, time broadcast and hourly chime. Transparent message board and the pen allow you to leave a message or draw a picture. Blue backlight can highlight romantic atmosphere in the night. When powered by DC power cable, the backlight will be lit all the time and it can be used as a small table lamp. When powered by batteries(not included), turn on the slide switch and you can light up the backlight by touching the clock, tapping the table or clapping your hands near the clock. 2 sets of USB ports for charging phones or mobile power supply. 12H/ 24H format and Celsius(C )/ Fahrenheit(F) are optional. Specifications: Display: Digital Item Color: Transparent + White Backlight Color: Blue Message Board Type: Vertical USB Port Quantity: 2 Message Board Size: 11 * 14.5 * 0.2cm / 4.3 * 5.7 * 0.1in Clock Base Size: 12.5 * 8.5 * 5cm / 4.9 * 3.3 * 2in Item Weight: 170g / 6oz Package Size: 13 * 7 * 18cm / 5.1 * 2.8 * 7.1in Package Weight: 287g / 10.1oz Package List: H15154 1 * Pen 1 * Clock Base 1 * Message Board 1 * USB Cable 1 * English Manual Note: Backlight can be voice-activated only when the clock is powered by batteries. The clock can charge phones or mobile power supply only when it is powered by DC power cable. ,US Stock Fast Shipping