Wir haben schon längere Zeit diese Bojen im Camper immer dabei. Sie sind absolut praktisch, funktionieren richtig gut. Wir verteilen sie als präsent, z.b.in die Einschulungstüte meiner Nichte die jetzt gerade ihr "Seepferdchen" gemacht hat.
Bis jetzt habe ich die Pfeife Gott sei Dank nicht gebraucht, natürlich getestet. Funktioniert mit wenig Energieaufwand, und genau so soll es sein.
I bought the 50n beach one for any personal emergency I might have or even helping a swimmer in distress. A week ago I went to the sea under normal conditions (had turned to yellow flag so a bit wavy) and proceeded to deploy it and test it. Better learn how it works before you actually need it. I was surprised how fast it inflated and how well it held me afloat, and I was holding on to it in different positions and for a 86kg man I can guarantee it is enough. You can calculate online how many kg of flotability you need and in my case it is around 4,4kg, more than enough with the 50n version. It stays well inflated until you get back to shore and changing the Co2 cartridge and folding it back into the pouch is really easy. I must say this design is really good and I added the clip light incase it is dark to help locate me. The whistle was included and sounds really loud. All this in a small package attached with a belt around your waist. No bother while swimming, peace of mind if I find myself in trouble.