About TUSA RS-670 Regulator

The RS-670 is TUSA's latest regulator that delivers Superior Performance and Quality in a Compact Lightweight Design. The R-600 mated with a newly developed S-80 Second Stage further pushes the engineering and performance envelope. The Ultra-Compact Chromed Marine Brass Balanced Diaphragm R-600 First Stage is Incredibly-Small and Weighs only 22.58 oz (640g). The R-600 is configured with 2 HP and 4 LP Ports. The Balanced Diaphragm, First Stage Regulator is inherently Environmentally Sealed. The benefit of this type of first stage design is that none of the delicate internal parts are exposed to contaminants such as salt, sand, chlorine or pool acids. These environmental contaminants can cause corrosion and mineral deposits to form on the internal mechanism deteriorating regulator performance.

The S-70 Second Stage has an Ortho-Conscious Mouthpiece that Enhances the Comfort of Bite, Fit, and Stability while Breathing from the Regulator Underwater. Even with a Light Bite, a High-Level of Stability-is-Achieved so there is No-Fatigue from Long-Periods of Usage. The TUSA S-70 Reliable Downstream Demand Valve Design Second Stage is equipped with a Breathing Resistance Adjustment Knob. By Simply-Rotate the Flow Adjustment Knob on the Side of the Second Stage Housing you can Increase or Decrease the Breathing Resistance. With its Click Spring Adjustment feature that is exclusive to TUSA, it has a 5-Position Adjustment Knob designed to Better Control Breathing Resistance. For Optimum Performance and Comfort, the S-70 Regulator comes with a 3/8" Threaded 27.56" (70cm) 360° Swivel Hose. The Swivel-Joint allows Flexibility of the Hose to Eliminate-Hose Tension. The S-70 Second Stage weighs 15.52oz (440g) with the Hose.

Warranty Information

This product has a limited lifetime warranty.

(800) 482-2282

TUSA RS-670 Regulator Features

  • TUSA RS-670 Regulator:
  • Superior Performance and Quality
  • Primary Hose: 3/8" Threaded 27.56" (70cm) with 360° Swivel
  • Total Weight: 38oz (1,058g)
  • Owner's Manual
  • Limited Lifetime Warranty
  • First Stage:
  • TUSA R-600 Regulator:
  • Balanced Diaphragm Design
  • Ultra-Compact and Lightweight
  • Chromed Marine Brass Construction
  • 2 HP and 4 LP Ports
  • Environmentally Sealed: Keeps Contaminate Out; Salt, Sand, Chlorine or Pool Acids
  • Less Maintenance
  • Second Stage:
  • TUSA S-70 Regulator
  • Reliable Downstream Demand Valve Design
  • Breathing Resistance Adjustment Knob with Click Spring Adjustment Feature
  • 5-Position Adjustment Knob Designed to Better Control Breathing Resistance
  • Ortho-Consciously Designed Mouthpiece

TUSA RS-670 Regulator Specifications

1'St Stage Type
Balanced Diaphragm
Lp Ports
Hp Ports
Adjustable 2'Nd Stage
Primary: Yes
2'Nd Stage Type
Primary And Octopus: Downstream Demand Valve
First Stage: Chromed Brass
Hose Thread
Hose Length
27.56" (70Cm)
Total Weight
38Oz (1,058G)
Mfr #

RS-670 Regulator Customer Reviews

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TUSA RS-670 Regulator

(based on 1 review)

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Reviewed by 1 customer

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By Juan

from San Juan, PR

About Me Advanced

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Verified Buyer


  • Adjustable
  • Comfortable
  • Effortless Breathing
  • Nitrox Compatible


    Best Uses

    • Extreme Depths
    • Warm Water

    Comments about TUSA RS-670 Regulator:

    Great regulator, adjustable with effortless breathing.

    • Diving Type:
    • Drift Diving, Night Diving, Open Water Diving
    • Was this a gift?:
    • No

    Comment on this review

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    Questions & Answers Powered by TurnTo®

    Questions about this item:

    Shopper  Why Did You Choose This?
    NICHOLAS M  Love it but have had one recall and last month another problem, otherwise a really great reg.
    Shopper  how is its performance in cold water ? and is it Nitrox compatible ?!
    DOUGLAS B  I can't comment on how it works in cold water because I have never used it in cold water. I dive nitrox and it has been a reliable reg. The octopus gave me a little trouble leaking on my most recent dive trip in Bonaire. It is ready to be serviced.
    Shopper  Has this regulator been cleared of all problems with Tusa's recall on it?
    Bill P  Yes
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