- Audible over 120 ft. away
- Uses 4 - AA batteries (included)
- Pressure tested to a depth of 350 ft.
- Simple one-handed on/off switch
- Hundreds of dives on one set of batteries
- Can run continuously for 24 hrs. if necessary
- Made in the U.S.A.
- Unconditional Lifetime Warranty
U.S. Patent 7.872.946