"Instructions: This is a First Aid Anti Choking Emergency Device, Semi-automatic anti choking device, Auto CPR First Aid Choking Device Outdoor Home Choking Emergency Equipment Adults Children Breath Rescue Anti Suffocation Device It is a Household Essentials,Even may not be used every day like daily items, but it is a pioneer in first aid at a critical time, adding a ray of hope for rescue. For families with children and Older, emergency breathing apparatus is a must, because the choking rate of children and older is much higher than that of adults. Feature: •Easy to Operate: Quickly release danger with only one button trigger in emergency while supporting self-rescue,Semi-automatic anti choking device: one-button trigger system makes it extremely easy to use •Preloading: Make the rescue quicker and easier, saving valuable time in emergency situations • First Aid Portable: Make rescue faster and easier, saving valuable time in emergency situations. With just one press of a button, our anti-choking device quickly work, saving valuable time in emergency situations • Consistent pressure: Continuous Suction of Approximately 35KPa, provides immediate pressure, relieves suffocation and ensures the best results every time. Safety: Greatly reduce the damage caused by mask pressure to face and neck, eliminating the risk of secondary damage caused by the blockage going deeper. 3 Different Size Masks: Cover almost all people except infants. Make sure the mask fits the face and forms a vacuum environment • How to Use: Ensure that the mask fits the face, forming a vacuum environment, press the button, the suction generated by the mask will quickly relieve suffocation. • Using with high quality materials to ensure the device's durability and reliability