Blue Ocean 0100

The world’s most rugged weather resistant megaphone with Removable Rechargeable Battery.


In Stock


The waterproof Blue Ocean Rugged Megaphone is a powerful voice projection instrument, developed to provide reliable audio communication – even in the most rigorous of environments. Designed originally for the rowing industry, these megaphones have become extremely popular with military, fire and police departments, and others who need to be heard by a large group of people.

This megaphone has been designed for a comfortable, secure grip and is shaped to deliver optimal sound. Drop-tested and waterproof, the Blue Ocean Rugged Megaphone is intended to assist with communication when and where it is most critical to be heard.

The Megaphone provides loud, clear audio with a long-lasting battery and a buoyant, waterproof, and drop resistant exterior.

It was uniquely designed and carefully built to defy severe weather that commonly ruin other megaphones; corrosion, cracking, breaking, and water damage.

All Kestrel instruments are made in the USA and are backed with a Five-Year Warranty.


  • Microphone located at the top of the unit allowing for clear sight lines above the megaphone while speaking into it
  • Protective bumper adds shock absorption and protection, great at protecting when the horn is placed face down
  • Wrap-around handles for an easy and comfortable grip
  • Microphone connector (If you own a Cox Box, it uses the same connector)
  • Siren/horn button emits a loud alert to grab people’s attention from a distance
  • Removable and compact rechargeable battery eliminates the hassle of replacing multiple batteries and wasting money each year
  • Battery lock ensures your battery will stay locked in place no matter how you use your megaphone
  • Large volume and power dial in a convenient location allowing for easy adjustments
  • Optimal shape designed to deliver loud, clear sound
  • Waterproof, it floats
  • Drop resistant, bounces without breaking
  • Meets MIL-STD-810G transit shock standard
  • Long-lasting battery
  • Designed and built in the USA


  • 22 Watt peak 19 Watt rated
  • Waterproof and built tough to stand up against harsh demands of rowing
  • Two handles for increased horn durability and added protection against corrosion
  • Microphone
  • Siren and Horn button
  • Protective bumper
  • Volume and Power
  • Rechargeable, removable battery allows you to simply charge and go- forget the hassle and cost of constantly replacing multiple batteries!
  • Up to 8 hour battery operation
  • Same rechargeable battery as the Cox Box
  • Comes complete with Australian complianced charger
  • 5 year warranty


Included in Package
  • Battery-Charging Station
  • Blue Ocean Megaphone Can Bumper
  • Hand/Shoulder Carry Strap
  • Rechargeable lithium-polymer Battery
Water Resistance P-67 (Excludes all dust and water for 30 minutes at 3.3ft / 1M submersion).
Unit Weight
  • Megaphone: 3.4 lbs with battery pack installed
  • Battery Charger: 13.6 oz. / 385 gr
  • Battery Pack: 3.8 oz. / 105 gr
Unit Dimensions
  • Megaphone: 12.75 x 12 x 8.5 in / 31.75 x 30 x 21.25 cm
  • Battery Charger: 2.5 x 4.25 x 32.5 in / 6.25 x 10.75 x 8.25 cm
  • Battery Pack: 3 x 2 x 1.55
Buoyancy Floats
Note: Megaphone with battery pack installed floats. Battery Pack alone and charger do not float.
Battery Type NK Blue Ocean Lithium-Polymer Battery Pack 11.1VDC Typical, 8 W/hr.
Battery Life Expectancy 80% rated capacity after 300 charge/discharge cycles 60% rated capacity after 500 charge/discharge cycles. Dependent upon volume and continuity of operation. 8 hours typical operation – defined as speaking 35% of the time at volume level 6 1/2 hours of s
Charging Battery NK Blue Ocean Battery Charger Input Voltage: 90-264VAC, 50-60Hz, 7 Watts; Universal input capable – compatible with all world currents with appropriate adapter plug.
Battery Temperature
  • Charging: 0°C to 45°C / 32°F to 115°F
  • Storage and Use: -20°C to 45°C / -4°F to 115°F (Battery capacity significantly reduced below freezing).
Amplifier High-efficiency, Class-D digital amplifier.
Power Output 22 watts; peak 19 watts rated.
Drop Resistance MIL-STD-810G 516.6 Procedure IV Transit Shock, drop height 36 in / 91 cm onto plywood over concrete.
Warranty Period 5 Year Warranty