Features: The color of the thermometer will change according to the scale according to the ambient temperature. It is suitable for testing aquarium water. The self-adhesive backing is used for convenient placement outside the aquarium. Compact, portable and space-saving to use. Easy to install and stick. Aquarium thermometer only, other demonstration accessories in the photo are not included. Specification: Material: Film Like Paster Type: Aquarium ThermometerColor: shown as pictures Display Temperature: 18 - 34c (64 - 93f) Size: 13x1.8cm(5.12x0.71inch)Quantity: 10pcsNote:1. Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:10pcs x Aquarium Thermo Meter