Displays both Fahrenheit and Celsius: This stick-on digital temperature strip measures in both Fahrenheit and Celsius. The thermometer has a range of 64F to 93F and 18C to 34C. Large numbers indicate Fahrenheit, small numbers indicate Celsius. Easy to install: Simply peel off the backing to reveal the adhesive and apply to the front of your fish tank, aquarium, jar, or fermentation bucket. Remove the transparent protective film before use. For one-time use only. Ideal for quickly monitoring the temperature of fish tanks, wine jars, and similar containers. Regular size: The adhesive crystal strip thermometer is sized to fit most surfaces. Suitable for fermenting, brewing, wine, beer, and aquariums. Wide temperature range: Measures from 64F to 93F with 1F accuracy. After 2 to 5 minutes, the color changes to indicate the exact temperature. Keep away from direct heat sources. Package includes: 36 digital temperature stickers. Sufficient quantity for long-term use in various applications. Suitable for monitoring temperature in fish tanks, aquariums, DIY drinks, wine barrels, and other pet tanks. Color: Black Material: PET Size: 13 x 1.8 cm Package Contents: 36 x Digital Temperature Sticker Note: Only the items listed are included. Light and display settings may cause slight color variations. Measurement error allowance: +/- 1-3 cm.