Innovative Inventions for Outdoor Comfort: Chiller Cans and Mosquito Repellent Ringtone

The video discusses two innovative technologies. The first is a chiller can that cools beverages without the need for bulky coolers, using an environmentally friendly refrigerant. This technology could reduce the need for large retail fridges. The second innovation is a ringtone designed to repel mosquitoes and other insects by mimicking the sound of male mosquitoes, which females avoid after mating. This ringtone was highly popular in South Korea upon release.

What frequencies are used in the ringtone to repel mosquitoes?

What impact did the ringtone have when it was first released in South Korea?