Outdoor window thermometer, digital display, maximum and minimum temperature memory function, with hook hole, can be hung on the hook or wall. Celsius to Fahrenheit can be easily converted at the touch of a button. Wide range of applications, temperature measurement -20 ~ 50 °C, can also be placed in the refrigerator. Counting parameters: 1. Celsius to Fahrenheit conversion function 2. Waterproof digital outdoor thermometer 3. Maximum and minimum temperature memory 4. Temperature accuracy: +/-1℃ 5. Temperature resolution: 0.1℃ 6. Temperature measuring range: -20~50℃/-4~122℉ 7. Power supply: 2 AAA 1.5V batteries (batteries not included) 8. Product size: 13.2 x 8 x 3 (cm).