Features: Smart light function: there is a light sensor hole, when the ambient light is dark, the alarm clock will automatically light up the backlight, easy to watch the night time, very intimate design,on the bedroom, get up at night, look at the time Very convenient, and the font is too large, but also very suitable for the elderly. Do not have to turn on the lights to see the time, press the button to see the time and worry Gradually ringing function: progressive ringtones (from weak to strong, by the slow and fast) --- very considerate Oh, let you wake up a little bit from the sweet dreams. simple classic shape design, simple but not simple, people put it down, worth having. Staying At Home: You Won't Sleep Late and Miss Your Class and Work With It. Temperature Display Great To Tell You What To Wear Anytime and Anywhere. As a Wonderful Decorate To Your Bedroom or Living Room. Used As a Small Nigh-light With Adjustable Brightness Funtion In Dark. Traveling :Portable Size:5.3*3*1.8In,Powered by 3*AAA Battery Suitable for Different People: Kids: Intellectual Soft Light, Protect Your Kids Eyes In The Night Friends: Take Care Of Your Friends Daily Life Seniors: The large Number Can Help Seniors Read The Time Easily Gift For Festival And Birthday Day The Special Alarm Clock For Special Time Specifications: Power: 3 x AAA batteries (not included) Dimensions: 7,5cm x 13,5cm x 4,5cm(2.95"x 5.3"x1.8") Package Include: 1 x Electronic Alarm Clock 1 x User ManualIt is a great assitant with rich functions for you,also can be a great gift. Powered by 3 * AAA batteries (batteries are not included), or through USB port, it has 4 USB ports ( USB2.0 protocol). Note: Light will be on all the time if it is powered by DC 5V (USB); otherwise it will be off after 10 seconds. Birthday celebration; Timing and countdown function. 16 world famous songs to appreciate.2000 to 2099 calendar. Date, time, temperature switchable or slide show.12H/ 24H format, Celsius(°C )/ Fahrenheit(°F) is optional. 3 groups of alarm and snooze function. Message board: It allows you to write some sweet message for your kids or lover. allows you to write messages, draw pictures. For example remind your kids or lover have a breakfast or drive safety.