Bobbin for inflatable lifejacket with release mechanism of type UML / United Moulders. Used in: Regatta Aquasafe / Aquasafe Jr. / Northsafe / Westsafe / Freesafe (prod. etter 01.2016) / SeaRescue Hybrid / Twinsafe.
The bobbin is marked with expiration date ("Replace by xx xxxx").
Durability: max 3 years
But storing and moisture can degrade durability: recommended changed annually given normal frequency of leisure use.