High precision, convenient and simple to use! Plastic suction cup, strong suction. Mini size and light weight. Safe and durable products for your fish tank. Great tool for a body thermometer, aquarium thermometer, indoor and outdoor thermometer ect. Material: Glass Colour: Yellow, White Size:15cm Accuracy: ±1° Range: 0 ℃ -- 50 ℃ Note: There could be some slight differences in the color tone of the pictures and the actual item. Please allow a little differs due to manual measurement, thanks.