◆ For seasonal influenza and heatstroke prevention. ◆ Displays the danger level of hot environments in 4 stages. Displays the danger level of influenza outbreaks in 2 stages. ◆ Dryness Index Mode (for seasonal influenza prevention): Automatic lower limit alarm for dryness index (alarm setting can be changed). ◆ Heatstroke Index Mode (for heatstroke prevention): Automatic upper limit alarm for heatstroke index (alarm setting can be changed). ◆ Auto Mode: Automatically switches between Heatstroke Index Mode and Dryness Index Mode. ※ This product is not a product that can completely prevent heatstroke. The onset of heatstroke is affected by various factors such as the thermal environment (temperature, humidity, radiant heat), individual differences (gender, age, medical history, and health condition), and situations such as exercise, work, and daily life activities. When using this product, please understand its characteristics and use it as a guide only. If you feel unwell while using this product, regardless of the display on this product, move to a cool place and seek medical attention.