This is a floating thermometer with high precision. It is easy to use, you just need to directly drop the thermometer into water 1 to 2 minutes, then take it out and can read the accurate temperature. It is suitable and perfect for measuring the temperature of swimming pool, spa and hot bath, etc._x000D_ _x000D_ Features:_x000D_ _x000D_ Made of high quality ABS material, hard, tough and durable. _x000D_ Small with a tie, easy to carry. _x000D_ Waterproof and long service time. _x000D_ Bright color, easy to read the data. _x000D_ Easy to use: Directly drop the thermometer into water 1 to 2 minutes, then take it out and can read the accurate temperature. _x000D_ Large testing range, suitable for swimming pool, spa and hot spring, or anything else you may want to use and it will start to get a temperature reading for you. _x000D_ _x000D_ Specification:_x000D_ Condition: Brand new_x000D_ Material: ABS_x000D_ Color: As picture shows_x000D_ Testing temperature: 0 to 40 degree._x000D_ Length: 22.5cm/ 8.9in_x000D_ Top diameter: 6cm/ 2.4in_x000D_ Bottom diameter: 3cm/ 1.2in_x000D_ _x000D_ Package list:_x000D_ 1 * Floating Thermometer_x000D_ _x000D_ Note:_x000D_ _x000D_ Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. _x000D_ Please understand that colors may exist chromatic aberration as the different placement of pictures. 1Small with a tie, easy to carry. 2Waterproof and long service time. 3Bright color, easy to read the data. 4Easy to use: Directly drop the thermometer into water 1 to 2 minutes, then take it out and can read the accurate temperature. 5Large testing range, suitable for swimming pool, spa and hot spring, or anything else you may want to use and it will start to get a temperature reading for you.