Features: brand new and high quality Simple and Sleek Aquarium Thermometer: 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. Accurately Monitor Water Temperature in Celsius: This temperature thermometer will display reading from 0 to 60 with precision built-in nickel-plated copper temperature probe, it is accurate to 0.1. Easy to Set Up: This self-adhensive fish for tank thermometer is powered by a build in 3V lithium-manganese button battery, you just need to tear down the film and stick it to the outside of your fish for tank. Wide Application: Suitable for different water types such as for fresh water, salt water, marine water, can be used as terrarium thermometer to monitor the living temperature for reptile such as lizards, turtles. Durable: Cover is made of high quality ABS material, eco-friendly, non-toxic and ordorless, with only 1.2cm/0.47" thickness. Temperature error 0.5. Undetachable battery can last about 5 years. Specifications: Material: ABS Color: White Size: Approx.4.3x4.3x1.2cm/1.69x1.69x0.47in Weight: Approx.20g Temperature Error: 0.5 Temperature Range: 0 - 60 Accurate to: 0.1 Display Mode: LCD Screen Measurement Period: 5 Seconds/for Time 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! Package includes: 1 Piece Aquarium Thermometer with Built-in Cell Battery