A practical and durable humidity meter for home or fish tank use. With a compact size for easy to use. You can easily know the indoor or outdoor and humidity from this water thermometer. Features - Color: White. - Material: Plastic. - Size: About 10.00X9.20X2.00cm/3.93X3.62X0.79inch. -Note: The color of the key font is random. - measurement range: -50 degree centigrade~70 degree centigrade - Humidity measurement range: 10% ~90%RH - resolution: +0.1C (0.1°F) - Humidity resolution: 1%RH - measurement accuracy: +1C (1.8"F) - Humidity measurement accuracy: +5% (30%-70%) - Battery: a AAA battery (Not included) - Storage conditions: -20~60 degree centigrade/20-80%RH - Large screen with huge digits displays the indoor and outdoor and humidity, durable and practical. - Clear display. Comes with large, clear LCD display, easy to read even in a long distance. - Great for monitoring family's living conditions and health to preventing colds, dry skin, etc. - Also monitoring the fish tank's , providing a healthy and comfortable water environment for all kinds of fish. - No matter whether the probe is placed in any corner of this fish tank, an accurate will be displayed. Package list: 1 x thermometer