This thermometer has an accuracy of ±3%~5% RH and ±1°F with data refreshed every 5 seconds. It features icons indicating DRY/COMFORT/WET air conditions. The 2.3-inch LCD display shows large numbers and allows switching between Celsius and Fahrenheit. The price drops from $18.99 to $9.49. Shipping is free for prime members or on orders over $35.