Multi-color digital alarm has 2 USB charging ports - 1A with charging icons. Multi-color display features: time (hour/minute), weekday, calendar (month/date), indoor temperature (F/C selectable), and humidity. Indoor temperature range: 32 degree F to 122 degree F (0 degree C to 50 degree C). Indoor humidity range: 10% to 99%. High/Low/Off backlight with adapter. Alarm for single, Monday - Friday, and weekend. English and Spanish display for weekday and 3-letter month. Low battery indicator. AC power adapter included. 2 AA batteries for backup (not included).