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OTTO Engineering - Expect Excellence

Speaker Microphones


Revo NC2

Revolutionary noise canceling (NC) performance and optimum voice clarity is delivered via an innovative patented design.
  • Ergonomic slim profile is comfortable to use and wear
  • Rotating clip design offers excellent retention
  • Immersion rated, fully sealed per IP68 standard: tested to withstand submersion in 1 meter of water for 31 minutes
  • Built-in debris screen
  • Optional emergency button
  • Large PTT is easy to find by touch, even when wearing gloves
  • High/low volume switch is unobtrusive and intuitive
  • Sealed 3.5mm earphone jack included for discreet listening with earphone kits (2.5mm for Harris models)

Revo NC-2 (OSM-2)
U.S. Patent No. D743,950
U.S. Patent No. 9,386,368


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