Package content: You will receive 2 electronic aquarium thermometers, each with its own battery, enough for your daily needs and replacements, you can share one with your friends/ Easy to install: The fish tank thermometer is easy and convenient to use, you just need to tear off the adhesive film on the back, then stick the thermometer on the outside of the fish tank, below the water level, to help you read the temperature accurately Mini Size: These digital aquarium water thermometers measure approx. 43 x 43 x 12 mm/ 1.69 x 1.69 x 0.47 inches, small size, light weight, easy to carry and store, can bring you more convenience Digital Display LED: The aquarium thermometer adopts LED digital display, green large font display, clear and easy to read, easy for you to read the temperature of your fish tank or aquarium Widely Applicable: These aquarium thermometers are practical and useful tools that can be widely used in aquariums, aquariums, etc., allowing you to know the temperature and avoid dangerous temperatures for fish, reptiles and other small animals Material: ABS Package includes: 2 aquarium thermometers Note:1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding.2. The color may vary due to different monitors, please understand. Note:Hello, please pay attention to your delivery address when purchasing products. If your receiving information (such as: name, street, house number, doorbell/email without name, etc. is incorrect, the order will not be delivered correctly.)