Closed design with strong sealing, waterproof up to IP65, effectively preventing water from entering the thermometer and hygrometer. Features a timing dynamic indicator circle with digital time display and circular dynamic pointer time display, including a countdown dynamic second indicator. Multifunctional device serving as a thermometer, hygrometer, timer, alarm clock, and clock. Includes over-limit alarm function: when the upper limit is exceeded, the backlight turns red; when the lower limit is exceeded, the backlight turns orange, and the alarm beeps for 5 seconds. The thermometer is made of high-quality plastic materials, wear-resistant, durable, not easily damaged, and designed for long service life. Item Type: Thermohygrometer Material: Plastic Weight: Approx. 310g Display Type: Pointer + Digital Timing Function: 99 Minutes Temperature Range: 0-50°C Humidity Range: 20%-99% Installation Method: Hang, Stand, or Suction (1 Suction Cup included) Protection Grade: IP65 Time Display: 12/24 Hour Switch (with Seconds) Power Supply: 3 x AAA Batteries 1.5V (battery not included) or USB Power Cable Display Mode: Digital + Analog Dynamic Display Backlight: Yes Product Color: White Package List: 1 x Thermohygrometer (battery not included) 1 x USB Cable 1 x Suction Cup 1 x Instruction Manual