Features:The shell is made of quality plastic, eco-friendly, anti-aging and durable.Built-in sensor accuratelydetects the temperature of fish tank.High brightness screen is clear and easy to read.Easy to install to the wall ofthe fish tank.Small size and lightweight, easy to carry.Specification:Condition: 100% Brand NewMaterial: Plastic Shell, Electronic ComponentsColor: Shown as PicturePower Supply: 1 * Button Cell(included)Measuring Range: -45C-80CAccuracy: 1Size: approx. 7*1.5cm/2.76*0.59inWeight: approx. 15g/0.53ozPackage List:1 * Fish Tank ThermometerNote:1. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.2.Please allow 1~3cm error due to manual measurement. Thanks for your understanding.