20x Coffee Cup Discoloration Thermometer Indicates Milk Temperature Fish Tanks Water Thermometer Quick Testing

Features:Suitable for testing temperature of milk bottles, wine bottles, beverages, refrigerators, kettles, fish tanks, water tanks, indoors, car, etc. No-mercury, harmless to human body and environment. No battery, not easy to break, reusable. Pocket size, can be used at home or traveling. Simply pulled the backing off to reveal the adhesive back and applied to the front of your fish tank/aquarium/carboy/jar/fermentation bucket. Specifications:Material: Paper Size: Approx.5x1.5cm/1.97x0.59in Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.Package includes:20x Thermometer Strips