The F-POD consists of a polypropylene casing with hydrophone housing at
one end and a removable lid at the other end.
F-PODs are very robust, but be careful not to drop the F-POD or subject it
to hard knocks, as this might interrupt the power supply.
PODs are identified by a unique number that is shown on labels on the SD
cards and on the POD housing under the upper buffer ring.
Spare O-rings
O-rings are used to seal the lid and keep it waterproof when it is closed.
Use these spares to replace the existing O-rings if they become damaged.