Whale Deterrent Pingers:  

1. 3-20 KHZ
2. Easy to use
3. Top choice of devices to protect you from whale's attack when under water
4. Highly effective to deter whales from tangling into your gears 
5. Highly effective to prevent predation on your harvest by whales
6. Water proof
7. Depth rating: 1000 meters
8.  Long battery life: one month with average use ( 50% immersion time )
9. Top choice for netting  fishing and ocean environmental protection
10. Made in UK
11. Distributed by Ocean-natives in US