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Tusa

TUSA RS-681 Scuba Regulator

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  • Sequential Exhaust Assist (S.E.A.)
  • Breathing Resistance Adjustment Control
  • Moisture exchange plate
  • Ultra-compact R-600 diaphragm first stage
  • Miflex® hose

  • Sequential Exhaust Assist (S.E.A.)
  • Breathing Resistance Adjustment Control
  • Moisture exchange plate
  • Ultra-compact R-600 diaphragm first stage
  • Miflex® hose

SKU:
TSA-RS-681U-MBK
UPC:
685193468280

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TUSA RS-681 High-Performance Scuba Regulator

 

The TUSA RS-681 Scuba Regulator is a great all-around diving regulator. It's compact and lightweight, but still has all the advanced technology you need for an exceptional diving experience. This top-performing regulator boasts an ultra-compact R-600 first stage with a balanced diaphragm and multiple ports, while the newly developed S-81 second stage provides smooth and effortless breathing with its innovative Sequential Exhaust Assist (S.E.A.) and venturi adjustment. The RS-681 comes with a moisture exchange plate to help with dry mouth and a flexible Miflex® hose, so you can dive to any depth in any water temperature with comfort, reliability, and adjustability.

Key Features

  • Sequential Exhaust Assist (S.E.A.) system for reduced exhalation resistance and natural breathing
  • Breathing Resistance Adjustment Control for fine-tuning air flow
  • Moisture exchange plate to reduce dry mouth by adding moisture to the inhaled air
  • Ultra-compact R-600 first stage with 2 HP and 4 LP ports for versatile configuration
  • Flexible Miflex® hose with high burst resistance and kink resistance

Related Underwater Gear Categories:

Detailed Specifications

  • First Stage: R-600 balanced diaphragm, ultra-compact, weighing only 630g
  • Ports: 2 HP and 4 LP ports on the first stage for flexible hose placement
  • Second Stage: S-81 with Sequential Exhaust Assist and venturi adjustment lever
  • Additional Features: Cold Water Kit (EK-600) kit available
  • Certification: Miflex hose certified to EN250 standards

Technologies

  • Sequential Exhaust Assist (S.E.A.): Dual exhaust system for smoother, natural breathing
  • Venturi Flow Adjustment: Adjusts airflow to prevent free flow at surface
  • Moisture Exchange Plate: Reduces dry mouth by adding moisture to the inhaled air
  • Environmentally Sealed 1st Stage: Prevents contamination and freezing in cold waters
  • Ortho-Conscious Mouthpiece: Designed to prevent jaw fatigue and enhance comfort

Weight: 2.53 LBS
Brand: Tusa

What's in the Box

  • 1x TUSA RS-681 Regulator (First Stage R-600 and Second Stage S-81)
  • User Manual

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