1.Easytoread display: With its clear and easytoread scale, this thermometer enables quick temperature checks at a glance. The large, visible numbers ensure that you can read the temperature accurately, whether in bright sunlight or dimmer indoor lighting. 2.Secure string attachment: Equipped with a string, this pool thermometer can be securely attached to the edge of the pool or at a suitable location. This feature prevents it from drifting away and allows you to keep it in an easily accessible place. 3.Perfect size for stability: Measuring 6.7 x 4.3 inches, this thermometer is designed for excellent stability while swimming in water. The compact size ensures that it does not take up too much space in your pool or spa, and it remains upright for consistent, accurate readings. 4.This thermometer is versatile for pools spas: ideal for indoor and outdoor use and perfectly suited for pools, whirlpools, and spas. It is suitable for a range of water temperatures, making it versatile enough for yearround use in various water environments.