3-level air comfort indicator: exclusive transparent color bar that shows dry/comfortable/moist air conditioning quickly at a glance. Ensures good humidity, excellent for monitoring family living conditions and health by preventing cold, dry skin, asthma, allergies, mold, etc. High accuracy and fast cooling: temperature range -9.9 C ~ 60 C with accuracy of 1 C and humidity range of 20% ~ 95% with accuracy of 3% RH. The indoor sensor detects temperature and humidity changes every 10 seconds to provide you with the latest readings. Note: Temperature below -9.9 C or humidity below 20%, it will read LLF/LL%. Temperature above 60 C or humidity above 95%, it will read HHF/HH% Clear, easy-to-read LCD display: humidity temperature gauge (dimensions: 7 x 7 x 1.4 cm) with large 8.5 cm LCD display, sharp and thin edges, easy to read from any angle and distance. Portable and lightweight, you can take it anywhere easily. / switchable by "+", 12h/24h selected by "-". Note: this model has no backlight to extend the battery life 3 ways to replace: built-in strong magnet for secure attachment to the metal surface directly, it also comes with a stand to place it on the desk, or you can use the adhesive pad to place it anywhere in your living room, baby room, kitchen, basement, office, greenhouse, guitar room, garden and cellar. Note: please fix the adhesive pad on a clean surface for 24 hours before placing the thermometer Date and clock function: exclusive design with date and clock, you can get the time easily. Comes with 1 CR2032 button cell battery, each battery can last 8-12 months. Color: white