The stick on thermometer strips are convenient and practical, with excellent texture, serve you . It can help you know the temperature of the water in the fish tank easily, offer you better using feeling, much safer, save your time and efforts. 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 - The thermometer sticker strip can be used for fish tank, aquarium to test temperature in a simpler and better way. - Intuitive numbers indicate the temperature, allowing the owner to set different temperatures for different fish. - Self-adhesive design, just peel off the tape and stick the thermometer sticker onto the fish tank or aquarium, easy to use. - The result is accurate, less error, test the water temperature of the fish tank, let your fish have better living environment. - You can send these digital aquarium thermometer to your family or friends who own fish . Package list: 12 x Aquarium Thermometer Stickers