• Power saving mode: the clock automatically switches to power saving mode with 3 AAA batteries (not included), not lighting up at night unless you activate it with a sound greater than 60 dB. • USB power supply: displays the time continuously when connected to a power source via the USB cable (included) or a DC adapter (not included). • Simple and elegant design: large 6.7-inch LED display with 12/24 hour time format. Ideal for nightstands or office desks. • Adjustable brightness: adjust the brightness to a low level or turn off the LED with the "LIGHT" button. Switch to power saving mode by unplugging the cable. • Alarm and snooze function: customize the alarm time and snooze time between 1 and 60 minutes, up to three times. • Product dimensions: 16 cm long, 6 cm wide, and 2.5 cm high. • Product weight: 0.16 kg.