Features: brand new and high quality Accurately Monitor Water Temperature in Celsius: This temperature thermo-meter will display reading from -45 to 80, it is accurate to 0.1. Durable: Cover is made of high-quality plastic material, eco-friendly, non-toxic and ordorless, with only 1cm/0.4" thickness. The included battery can last about 1 year. The battery is changeable. Easy to Set Up: This self-adhensive fish for tank thermo-meter is powered by a button battery, you just need to tear down the film and stick-it to the outside of your fish for tank. Simple and Slim Aquarium Thermometers: Digital number display on large clear screen ensures you to read current temperature quickly and accurately without any blind zone. no probe or messy wires in water reduce electronic component aging problem. Wide Application: Suitable for different water types such as for fresh water, salt water, marine water. Package Includes: 1 Piece Aquarium Thermometer Digital (Silver/Gold) Specifications: Material: Plastic Color: Silver/Gold Size: Approx.7x2x1cm/2.76x0.79x0.39in Weight: Approx.14g Measurement Accuracy: 0.1 Measurement Range: -45-80 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!