2 CHARGE MODES Mini alarm clock can be charged by usb or batteries, 4 buttons make it easy to operate even the elderly or children. So it's a perfect gift for everyone. 2 CHARGE MODES Mini alarm clock allows to be charged by usb or batteries, 3 buttons well easy operation even the elderly or children. So it's a perfect gift for everyone. ECONOMY DESIGN Wake up the screen when your voice is over 60dB, otherwise it stays miserly to save electricity, no more worry about damage caused by pressing keys frequently. MULTI BRIGHTNESS It can adjust brightness auto: Clear, Less clear, Dull. Do not irritate your eyes with dim light, it can be used in different environments. DISPLAY Digital display, year, date, day, time (12/24), temperature ( / ), the alarm clocks (3 separated)on the screen by white characters. Meet your basic needs all day. DECORATION Perfect gift for birthday, wedding or party as this clock is modern yet classic. It is completely silent compared to other clocks and can be perfectly matched anywhere, home, office, or in the car. It is small to take everywhere.