Marathon Round Atomic Alarm Clock with Push-Button Backlight features a 12/24 time display, 5 second backlight button and a daily alarm function. Radio controlled on/off function, daylight saving time on/off function, eight (8) time zones (Eastern, Atlantic, Newfoundland, Hawaii, Alaskan, Pacific, Mountain, Central). Measurable indoor temperature range of -9.9°C ~+ 60°C (14.1°F ~ 140°F). Suitable for the décor in a living room, bedroom, bathroom, kitchen, baby room, nursery décor, on an office desk, closet, greenhouse, garden, wine cooler cellar, basements etc. Available in two colors (Black and Graphite Grey) for any decorations home needs. Battery Powered 2 x AAA batteries required.