Retro tubular LED alarm clock with a modern bedside design. Displays 12- or 24-hour time, digital alarm with snooze, and temperature (0–50°C). The black cut-out LED screen runs dimmer on batteries and brightens when you press the top button; it remains continuously backlit when connected to a power source via the included USB cable or a DC adaptor (not included). 3 x AAA batteries (not included) are required to retain time and alarm settings. Features night brightness setting, acrylic case, compact size HWD 9 x 17.5 x 8.5 cm (3.5 x 6.9 x 3.3 in), and a 24-month manufacturer warranty.