Aquatec Duo Alert Mask Accessories consistent output at 14

consistent output at 14

longer if required

remaining within accepted dive table and oxygen exposure limits using tables and dive computers

Booking is required for pool and open water sessions

The NX trigger is large

Aquatec Duo Alert Mask Accessories consistent output at 14This new AQUATEC Duo Alert is very compact in size. Only the best quality component is used in manufacturing of the AQUATEC Duo Alert. The loud resonating frequency generated by this horn can be heard on the surface over a 1km. range, and underwater approximately 100 metres. Features: Horn works both UNDERWATER and on the SURFACE. Volume: Underwater 115 125 dB Surface 123 130 dB.