Made of durable ABS material, this digital thermometer is designed for use and portability. Its wireless design ensures a clean and safe environment for your aquarium pets, without the hassle of complicated wires or cables. Features -Color:White -Material:ABS -Size:4.20X4.20X1.10cm/1.65X1.65X0.43in - Wireless design for a clean and safe aquarium environment, just stick the thermometer onto fish tank wall. - This fish tank thermometer is suitable for different types of water tanks, including fresh water, tap water, salt water, and sea water. - Ensures the most comfortable water temperature environment for your beloved pets. - Precise temperature readings with refresh rates as fast as every 5 seconds. - High definition LED display with large font shows real-time temperature readings for easy and comfortable reading. Package list: 4 tank thermometer