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Golden time: 4 minutes!

99% survival rate 

if rescue occurs within 4 minutes

Main Service

Golden time: 4 minutes!

99% survival rate if rescue occurs within 4 minutes

Life alarm

Survival rate drops to 50% if drowning lasts longer than 4 minutes.


If you enter a drowning state while wearing the blackout siren device, the device will start timing from the moment it is submerged in water. If the measured time elapses, it will consider you a drowning victim and send an alarm and text message.

Easy accessibility

Intuitive usage method that anyone can easily use


Connect the dedicated bone conduction earphone device via Bluetooth to your phone and use it. With an intuitive usage method, even first-time users can easily navigate the application.

Professionalism of the Application

Logic designed by water safety experts


The application logic was developed with the participation of experts from the Korean Lifeguard Association, the Korean Swimming Federation, the Fire Department's Prevention and Safety Division, and other water safety personnel to validate its necessity.

Life alarm

Survival rate drops to 50% if drowning lasts loger than 4 minutes.

If you enter a drowning state while wearing the blackout siren device, the device will start timing from the moment it is submerged in water. If the measured time elapses, it will consider you a drowning victim and send an alarm and text message.

Easy accessibility

Intuitive usage method that anyone can easily use.

Connect the dedicated bone conduction earphone device via Bluetooth to your phone and use it. With an intuitive usage method, even first-time users can easily navigate the application.

Professionalism of the Application

Logic designed by water safety experts

The application logic was developed with the participation of experts from the Korean Lifeguard Association, the Korean Swimming Federation, the Fire Department's Prevention and Safety Division, and other water safety personnel to validate its necessity.