The item is a wireless digital swimming pool thermometer which can floating on the water. This product is constructed with plastic material for long-lasting and practical use, directly with water. It offers more accurate measurements. Features - Color: Black. - Material: Plastic. - Size: About 14 x 8x 2.5 cm. / 5.51 x 3.14 x 0.98 inch. - Visual Field wireless transmission line ( ) : 100 feet - Made from material, safe and durable. - It can directly with water, water proof and able to float on the the water. - Suitable for measuring water temperature in swimming pool, bath, fish tank, etc. - Easy to use. Just put it on your swimming pool, or anything you might want to use, it will begin to get the temperature. - It is a practical tool and won’t take up too much space. -This product is required to be waterproof. When you set it up. The waterproof ring is required to be installed. Screw on the cap. (Installation method of waterproof ring: first, insert the waterproof ring into the groove of the cover completely, and then close it tightly.) Package list: 1 Thermometer