HD LED digital touch display: This aquarium thermometer features an LED digital display that provides clear and easy-to-read temperature values. The screen automatically enters power saving mode after 10 seconds of inactivity and can be activated by touching the power button. Offers real-time temperature display with one-touch operation; long press for 5 seconds to switch temperature units. High precision digital temperature meter: Equipped with a high accuracy sensor, this digital aquarium thermometer measures water temperature within a range of 32–211.8°F (0–99.9°C), with a resolution of 0.1°C (0.18°F) and accuracy of ±0.5°C (±1°F). Fast update speed of up to 5 seconds allows quick visual detection of temperature changes. Sticky design: Unlike traditional models, this thermometer uses a transparent double-sided adhesive on the back. Simply remove the protective film and attach it directly to the aquarium glass. The adhesive is washable, reusable, and leaves no residue. Wire-free design ensures safety for aquatic life by eliminating risks of entanglement or electric shock, providing a clean and secure environment. Long battery life: Powered by a single CR2032 battery (included), this thermometer can operate for up to 12 months. Energy-efficient design reduces the need for frequent battery replacements. The compact size (4.5 x 3.5 x 1.5 cm) ensures minimal space usage without compromising the aesthetic appeal of your aquarium. Wide application: The mini design makes it easy to use and ideal for various water environments including freshwater, saltwater, seawater, and tap water. Suitable for monitoring temperature in aquariums, turtle tanks, coral tanks, planted tanks, glass containers, and other pet habitats. Helps maintain optimal living conditions and protects fish, reptiles, and small aquatic animals from harmful temperature fluctuations.