This fish tank stick on thermometer strips are easy to use, can bring you satisfying using feeling. Can be used for different kinds of fish tanks or aquarium, accurately test the water temperature, let your fish have more comfortable living environment. Features -Color:Black -Material:Liquid crystal, paper -Size:13.00X2.00X0.10cm/5.11X0.79X0.04in -Temperature range: 10 degree centigrade~40 degree centigrade/50 fahrenheit scale~104 fahrenheit scale - Aquarium fish tank thermometer sticker are easy to use, no need of other complicated tools. - Practical design, color changing, digital thermometer sticker strip is safe to use for your fish tank or aquarium. - The thermometer sticker can be used for fish tank for temperature testing, very convenient to use and you can get accurate result. - With digital indication of temperature, the stick on thermometer strip can let you know the result easilyl. - The aquarium thermometer stickers can be used for most fish tank or aquarium, satisfy your demands very well. Package list: 12 x Aquarium Thermometer Stickers