Features£º Blue backlight with 4.3¡± LCD display makes it more easy to read. Displays temperature、 time and humidity、 as well as alarm & snooze function. 12/24 hours display according to your own preference with hourly chime function. Temperature displayed in ¡æ or ¨H. Records Min or Max temperature and humidity. Specifications: Color: Black Material: ABS Product dimensions: (3.62x3.62x1.58)¡±/(9.2x9.2x4.0)cm Display: LCD Backlight: Blue LED light Temperature accuracy: ¡À1.5¡æ Unit of temperature: ¡æ & ¨H Indoor temperature range: 0¡æ ~ +50¡æ Humidity accuracy: ¡À5% Indoor humidity range: 20% ~ 90% Battery: Just one AA battery (last for at least 6 months) (Not Included)Package Content: 1x Excelvan alarm clock with temperature and humidity Note: The battery is not included in the box.