The item is a reptile thermometer. This product is practical to use. With sticker design, just apply it on the metal surface of the aquarium or reptile box. It offers more accurate temperature measurements. Features - - Material: ABS, PC, aluminum - Size 7.40X7.40X2.20cm/2.91X2.91X0.86in - Temperature Range: 60-120­°F/16-49­ degree centigrade - Humidity Range: 0-100% - The material is safe and light, which is wear resistance and practical for the lasting time use. - No tools required and zero assembly, easy to install and use. No batteries needed. - With round edges and smooth surface, safe to touch and do not hurt your hands. - This thermometer can quickly and accurately tells you the temperature anytime due to its large surface. - This reptile tank thermometer works well with your aquarium or reptile box, practical to use. Package list: 1 x Reptile Hygrothermograph