MTEH FYY-01 oxygen enricher with folding carry handle, white body and gray top.
Product images are for reference. Accessories depend on the selected configuration.

FYY-01

MTEH Portable Oxygen Enricher

A fold-away handle and two continuous-flow settings in a compact format.

$169.00 $199.00

Free U.S. shipping, including Alaska, Hawaii and Puerto Rico. Estimated delivery: 5–7 business days.

  • Two continuous-flow settings: 1.5 and 1.8 L/min
  • Built-in rechargeable battery
  • Approximately 5.5 × 5.1 × 2.8 in
Compare FYY-01 & FYY-03

FYY-01

Continuous flow

Inhale
Airflow
Exhale
Airflow

Continuous outputUp to 1.8 L/min

Steady delivery through inhale and exhale.

Simple & lightweight

FYY-03

Breath-responsive

Inhale
Delivery
Exhale
Pause

Peak inhale flowUp to 5 L/min

Continuous mode also available.

More flexible control

Peak inhale flow is not continuous output or a pulse dose. Both models deliver oxygen-enriched air. See full specifications for output details.

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Product details Good to know
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Controls and care

The orange control cycles power and continuous-flow settings. See the instructions supplied with your device for the operating sequence.

Keep the device upright and its vents clear. Use the power supply specified for your device. Keep away from flames, smoking, oil and water. Switch off before cleaning the housing with a soft cloth. Do not share tubing or open the housing for repairs.

A closer look

Know your device.

One orange button. Two continuous-flow settings. Get to know the controls and carry handle.

Angled view from above of the MTEH FYY-01, showing the orange control, oxygen outlet, folded handle and circular side air vent together. Numbers match the descriptions.
Picture-in-picture close-up of the rear USB-C charging port on the MTEH FYY-01.

USB-C

Supplier product images. Numbers are a visual key, not an operating sequence.

  1. Power & flow control

    The orange button controls power and cycles through the two continuous-flow settings.

  2. Oxygen outlet

    Connect the supplied oxygen tubing here.

  3. Fold-away handle

    Raise the handle to carry the device; fold it down when not needed.

  4. Side air vent

    Keep this opening clear while the device is running.

  5. USB-C charging port

    Connect the specified USB power supply at the rear of the device.

Follow the instructions supplied with your device for button timing, settings and safe operation.

A change of scene

Small device. More room to go.

Compact, rechargeable and easy to bring along. From everyday walks to road trips and mountain trails.

Built-in rechargeable battery
Up to 4 hours
Manufacturer-reported maximum, confirmed by our supplier. Runtime varies with settings, conditions and battery condition.
  • Park-walk scene of an older woman using nasal tubing with the compact MTEH FYY-01 inside a black bag worn crossbody at her hip.

    Take the scenic route.

    Your portable setup, right by your side.

  • Car-interior scene of an older man at the wheel using nasal tubing connected to the MTEH FYY-01 on the passenger seat.

    Along for the drive.

    Oxygen-enriched air on the road, with a compact device beside you.

  • Side-angle late-autumn mountain scene of a younger dark-haired man stepping up rocks and bracing with one hand, using nasal tubing with the MTEH FYY-01 black bag worn crossbody at his hip.

    Take it to the trail.

    A shoulder-carried setup that leaves your hands free for the trail.

What's in the box.

  • MTEH FYY-01 with white housing, gray trim and folding carry handle.

    1 device

    FYY-01 oxygen enricher

    Built-in battery.

  • Black MTEH shoulder bag with its carrying strap.

    1 bag

    Shoulder bag

  • The three supplied tubing styles, shown side by side: nasal oxygen tube, single tube and headset-style nasal oxygen tube.

    3 pieces

    Oxygen tubing

    Nasal, single and headset-style tubing.

  • USB-A and USB-C connectors from the supplier's charging illustration; cable appearance may vary.

    1 cable

    USB charging cable

  • Cover excerpt from the supplied MY-FYY-01 product instructions.

    1 manual

    User manual

Wall adapter not included. Use a USB power adapter that meets the supplied device instructions.

Supplier images and manual excerpt. Cable appearance may vary. External battery not included.

At a glance

The details that matter.

Size, controls and output. A clear look at what each model offers.

Product details
Flow modeContinuous
Continuous flow / low1.5 L/min
Continuous flow / high1.8 L/min
Oxygen at outlet30%
Device dimensionsApproximately 5.5 × 5.1 × 2.8 in (140 × 130 × 70 mm)
Noise figure45 dB
BatteryBuilt-in rechargeable battery

Technical figures are nominal and may vary with settings and conditions. Outlet oxygen concentration is not the concentration inhaled.

MTEH oxygen enrichers

Good questions. Clear answers.

Questions about the MTEH FYY-01 and FYY-03 portable oxygen enrichers.

How do the FYY-01 and FYY-03 oxygen enrichers differ?

FYY-01 offers a fold-away handle and two continuous-flow settings, up to 1.8 L/min. Airflow continues during both inhalation and exhalation. FYY-03 has separate Continuous and Breathe controls. In breath-responsive Breathe mode, it delivers during inhalation and pauses during exhalation, with peak inhale flow up to 5 L/min. Continuous mode is also available. Peak inhale flow is not continuous output or a pulse dose. Both models deliver oxygen-enriched air; see each product's full specifications for output details.

How should I care for an MTEH oxygen enricher?

Keep vents clear, use the specified power supply and keep the equipment away from flames, smoking, oil and water. Switch off before cleaning and follow the supplied instructions for tubing and accessories.

How do shipping, returns and warranty work?

Standard shipping is free to all 50 states, Washington, DC and Puerto Rico. Estimated delivery is 5–7 business days from Seattle. All products include 30-day unconditional free returns, even if opened or used. We provide a prepaid return label and charge no restocking fee. Every product also has a 1-year warranty from delivery for faults during normal use. We can send parts or take back the product for repair or a new replacement, with necessary shipping covered by Seravni. See our shipping policy for delivery details.

  • 5 stars: 9 (90%)
  • 4 stars: 1 (10%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
L
L.M.

Likes weight for travel.

M
M.C.

Simple startup; satisfied with operation.

J
J.M.

Compact; easy controls; satisfactory battery.

B
B.P.

Positive brief reaction

C
C.Q.

Convenient for errands; likes continuous flow.

R
R.D.

Reports convenient airport travel.

L
L.B.

Portable and quiet; wants clearer cleaning instructions.

R
R.M.

Simple controls; battery suits short outings.

P
P.H.

Compact and easy to store

M
M.K.

Portable; Note that charging plug was not included.