Specifications: Weight: 3.53 Ounce Color: Transparency Pointer Diameter: 2.2 Inch Acrylic Diameter: 4.3 Inch Package Size: 4.7*4.7*1.6 Inch Temperature Measurement Range: -40℉/ -40～50℃ Description: If you know the outdoor temperature when you are indoors, this provides a good scientific basis for us to go out, reducing our sense of cold and other diseases effectively. If you want to test the change and accuracy of the thermometer quickly,you can put it into the refrigerator and you will see a noticeable temperature change within 10 minutes. Warning: If the glass is exposed to direct sunlight, the temperature will be higher than normal. Waterproof: The product won’t be affected by the harsh environments owing to the rainproof performance. It can measure the outdoor temperature accurately and quickly, you can read the outdoor temperature indoors. Use Instructions: Wiping the glass that needs to be placed thermometer, toring the protective film from the back of the thermometer, then, adjusting the angle of the thermometer to fix it on the glass, you can squeeze the thermometer gently to make it fastness. Characteristics: This outdoor thermometer displays both Celsius and Fahrenheit. The accuracy is between -40 and 120℉/-40 to 50℃ to suit all climates, and exquisite design can be used as an adornment. Cleaning method: The product can be pulled from the plastic fastener, and the dirty dust on the dial can be removed, then the product installed up. Perfect service: The thermometer will calibrate automatically, after 2 hours, the pointer will match the local temperature automatically. Please feel free to contact us if you have any questions about our products. Package Contents: 1*Thermometer 1*Instruction Manual 2*Double Faced Adhesive Tape