Description: Material: Temperature measurement Size: 5 * 5cm/1.97 * 1.97inch Color: Black Feature: 1. Intuitive and easy to read: Adopting a large number display design, the scale is clear and visible, making it easy to read water temperature data even from a distance. 2. Easy installation: Simply gently stick the patch onto the outer wall of the fish tank to use, without complex installation steps and without causing damage to the fish tank. 3. Waterproof and Strong durability: Specially made materials have good waterproof performance and can be exposed to humid environments for a long time without affecting accuracy or damage. 4. Safe and reliable: No electronic components, no power supply involved, avoiding potential safety hazards caused by electrical equipment, very suitable for household use. 5. Affordable: Low in price but fully functional, it is an ideal choice for entry-level fish farming enthusiasts. Attention: 1.Due to manual measurement, there may be a 1-3mm error in product dimensions. 2.The color of the product may have errors due to objective reasons, and the actual product is the main focus. The product includes: 1 * fish tank patch thermometer