Aquarium Thermometer Sticker Temperature Strip Dual Scale External Stick

Features:
Simple to use external stick-on thermometer for measuring the temperature of your aquarium.
The thermometer changes colour according to the temperature. If the surrounding temperature is 20°C, then the background of the scale mark for 20°C will turn colourful and the other scale marks will remain black.
Dimensions: L-13cm/5.12″, W-1.8cm/0.71″
Package includes:
1/2/5/10pcs x stick on thermometer