Features: Round aquarium thermometer with high accuracy, waterproof & cold-resistant. Measuring range: -50~70, accuracy: 1(-10~30), others 2.5. Thermometer is moisture resistant and not affected by the environment, which will give accurate reading and display. With magnetic back, you can adsorb it in refrigerator or other metal surface. Perfect for use in refrigerator,freezer, fish for tank aquarium, etc. Made of quality plastic, which is durable and reliable to use. Specifications: Material: ABS Package Size: 100x150x23mm/3.94x5.9xx0.91in Measuring range: -50~70 Accuracy: 1(-10~30), others 2.5 Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1X Aquarium Thermometer