1、Fast response to provide updated and accurate readings, wide measuring range. 2、Strong waterproof, can be used outdoors, do not worry about the water problem. 3、Multipurpose Suitable for household, guitar case, green house, office and labs. 4、Accurate Record Max. and Min. values of temperature and humidity. 5、Fast to switch degrees Celsius and Fahrenheit, easy to use. Indoor / outdoor temperature, indoor humidity display. °C / °F temperature switch display, comfort display. Indoor and outdoor maximum and minimum temperature memory function. Memorized MAX/MIN indoor temperature and humidity value automatically. convenient to place.   Features: 1. Fast response to provide updated and accurate readings, wide measuring range.  2. Strong waterproof, can be used outdoors, do not worry about the water problem. 3. Multipurpose Suitable for household, guitar case, green house, office and labs. 4. Accurate Record Max. and Min. values of temperature and humidity. 5. Fast to switch degrees Celsius and Fahrenheit, easy to use. 6. Convenient Delicate size, portable and light.   Specification: Condition: Material: ABS Weight: 112g Size: 13.2*8*3 Cm / 5.19* 3.14* 1.18 inch (approx) Color: black, white Humidity Accuracy: +/-1℃ The temperature resolution: 0.1 ℃ The temperature measurement range: - 20 ~ 50 ℃   Package list: 1 x Digital Hygrometer   Notice: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm. Please replace the battery if the battery had run down after months. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.  Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.