Features:brand new and high qualityDisplays Degree Centigrade Fahrenheit: The horizontal thermometer strip has a range of 18 to 34 and 64 to 93.Easy To Stick On: Simply pulled the backing off to reveal the adhesive back and applied to the front of your fish for tank/aquarium/carboy/jar/fermentation bucket. Great way to keep a quick eye on your fish for tank/wine jar/kombucha temp.Easy to Read: The thermometer temperature sticker is a piece of temperature sensitive paper.Different Quantity to Choose: We provide you with 3 different quantity set to choose from, namely, 1 piece, 10 pieces, or 20 pieces of temperature strips, enough quantity to use, each thermometer sticker is approx. 5.1 x 0.7 inch.No Battery Required: Aquarium thermometers are mechanical and has a longer life expectancy in use, you don'for t have to worry about cold weather draining the battery since the analog work well but no batteries needed. Package Includes:1 Pc Aquarium Thermometer Stickeror10 Pcs Aquarium Thermometer Stickersor20 Pcs Aquarium Thermometer Stickers Specifications:Material: PET + Liquid CrystalStyle: 1Pc/10Pcs/20PcsSize: Approx.130x18mm/5.1x0.7inWeight (Approx.): 1Pc-2g10Pcs-12g20Pcs-25gTemperature Range: 18 - 34/64 - 93 note:1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you