SMACO S300 0.5L Mini Scuba Tank and Shoebox-1A Kit Review — Is It Worth It? [2026]

In-Depth Review · 2026

SMACO S300 Mini Scuba Tank + Shoebox-1A

A 0.5L, 1.1kg mini tank bundled with a portable compressor so you can refill it yourself.

★★★★☆ 4.2/5 · Teelacodes editorial score — the product page shows no customer ratings

$428.99 $589.99

Check Price & Buy → View Specifications

0.5L

Tank

1.1kg

Tank Weight

~35

Breaths at 5m

~11 min

Refill Time

Quick Verdict

Is the SMACO S300 + Shoebox-1A kit worth buying?

The tank alone is a few breaths of air. The compressor is what makes this a kit that works away from a dive shop. At $428.99 (from $589.99) it is the cheapest way to own both. Be realistic about what it does: a few minutes of snorkel-depth play, to 5 meters (3 meters with a full-face mask).

Great forBoaters, pool owners and snorkelers who want a few minutes of breathing at shallow depth.

Reconsider ifYou want longer underwater time. 35 breaths goes fast. Mini scuba is not a substitute for dive training. Read SMACO's user manual and safety guidelines, never dive alone, and get medical clearance if you are over 60.

Overview

A tank and a compressor in one box

The kit includes the S300 tank with a breathe-on-demand regulator, the Shoebox-1A air compressor, a safety lanyard, a water separator and a high-pressure hose. The compressor runs from a 12V car battery or an AC outlet.

Key Features

What makes it stand out

01 · Tank

0.5L, 1.1kg, 200 bar

A 36.3 x 6cm 6061 aluminum cylinder rated for 200 bar (3000 psi). SMACO quotes about 35 breaths at 5 meters, which is a short dive.

02 · Compressor

Refill in about 11 minutes

The Shoebox-1A takes the tank from empty to 3000 psi in about 11 minutes, on 12V or AC power.

03 · Depth

5m max, 3m with full-face mask

The shallow limits are the key spec. SMACO lists 5 meters (16ft) and 3 meters with a full-face mask.

04 · Support

30-day returns, 1-year warranty

SMACO lists 30-day returns, a one-year warranty and 24/7 chat support.

Specifications

Full spec sheet

SMACO S300 0.5L Mini Scuba Tank and Shoebox-1A Kit — specifications
Tank capacity	0.5L
Working pressure	200 bar / 3000 psi
Tank dimensions	36.3 x 6cm
Tank weight	1.1kg
Material	6061 aluminum
Regulator	Breathe on demand
Max depth	5m (16ft); 3m with full-face mask
Breaths	About 35 at 200 bar (5m)
Compressor refill	About 11 min (0 to 3000 psi)
Power	12V car battery or AC outlet
Kit contents	Tank and regulator, Shoebox-1A, safety lanyard, water separator, high-pressure hose
Certifications	CE, TUV, DOT

The Balance

Pros & Cons

Pros

Tank and compressor together.
Light at 1.1kg.
Runs on 12V or AC.
30-day returns and 1-year warranty.
Cheapest route to owning a refill kit.

Cons

Only about 35 breaths per fill.
Very shallow depth limits.
No ratings on the product page.
Safety training is on you.

FAQ

Answers before you buy

How long does a fill last?

About 35 breaths at 5 meters.

How long to refill?

About 11 minutes from empty to 3000 psi.

How deep can I go?

5 meters; 3 meters with a full-face mask.

What power does the compressor use?

A 12V car battery or an AC outlet.

Who shouldn't use it?

SMACO says people over 60 need medical clearance, and it is not suitable for pregnant individuals.

4.2/5

Overall Score

A very portable way to try mini scuba

It is a small, light kit for short shallow sessions. If you want a self-contained setup with a compressor, the price makes sense. If you want longer dives, look at the 2L tanks.

Check the SMACO S300 Kit · $428.99 →

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Last updated: October 5, 2026 · Reviewed by the Teelacodes Editorial Team.