Features: 3D LCD see-through thermometer made of high-quality materials, sturdy and durable. Highly sensitive electronic sensor, precision chip, the accuracy can reach 0.1 degrees Celsius. There is a strong sticker on the back that you simply peel off and stick to the outside of your aquarium. Large-screen digital display, intuitive readings, real-time temperature measurement. The temperature sensing speed is fast and the range is large, and the temperature of the fish tank can be observed anytime and anywhere. how to use: 1. Tear off the sticker and stick it on the outer glass of the aquarium below the water level. 2. Please do not put in water, otherwise it will be damaged. Specification: Material: GPPS Size: 2.76*0.79in/7.0*2.0cm Color: gold, silver Package Includes: 1pc Notes: Please allow minor errors due to manual measurement. The colors may be a little difference for the different monitor display.