Include: 1 X Portable automatic inflator device, 3 X Yellow water-soluble bobbin (for automatic activation) ,5 X Green safety clasps Latest Design: The red and green indicator covers let you know if the bobbin have been used Reliable: Embedded safety buckle to prevent accidental touch and ensure device operation Notice: When we don't have a green safety buckle, the device can still be used, but accidental touch increases the probability of the device working at any time Perfect Accessories: An excellent accessory for inflatable life vest. Life vest can ensure your safety during water sports