SMACO S700Max vs S300 Kit vs K2 vs S700Plus: Which One Should You Buy? [2026]
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SMACO S700Max vs S300 Kit vs K2 vs S700Plus
Four SMACO mini scuba options compared by price, air capacity, depth limit and reviews on the product pages.
Which SMACO should you buy?
For most people the S700Plus is the best all-round buy, with the best-supported ratings and 10-meter depth. The K2 set is the cheap way in if you will stay within 3 meters. The S300 kit makes sense if you want to refill at home. The S700Max is for those who really want dual tanks.
Four ways to breathe underwater
Depth is the key difference. The S700 tanks go to 10 meters, while the S300 kit tops out at 5 meters (3 with a full-face mask) and the K2 set at 3 meters.
A closer look at every pick
SMACO S700Max 2.0L Double Mini Scuba Tanks — $719.00
Two 2L cylinders, about 230 breaths at 10m, modular design, $719.
SMACO S300 0.5L Mini Scuba Tank and Shoebox-1A Kit — $428.99
0.5L tank and Shoebox-1A compressor, about 35 breaths at 5m, $428.99.
SMACO K2 Full Face Snorkel Mask with S300 Mini Scuba Tank — $199.99
Full-face snorkel mask with S300 or S300Pro tank and camera mount, 3m limit, $199.99.
SMACO S700Plus 2.0L Mini Scuba Tank — $375.00
Single 2L tank, about 115 breaths at 10m, vest and bag included, $375.
Comparison table
| Product | Price | Air | Max depth | Page rating |
| S700Max | $719.00 | 2 x 2L, ~230 breaths at 10m | 10m | 4.75 (4 reviews) |
| S300 + Shoebox-1A | $428.99 | 0.5L, ~35 breaths at 5m | 5m (3m with mask) | None shown |
| K2 mask set | $199.99 | 0.5L / 0.7L, ~35 / 52 breaths | 3m | 4.87 (23) |
| S700Plus | $375.00 | 2.0L, ~115 breaths at 10m | 10m | 4.86 (50) |
Pros & Cons Across the Lineup
Pros
- Every tank is CE, TUV and DOT certified.
- One-year warranty and 30-day returns.
- Options from $199.99 to $719.
- Clear safety notes on the pages.
Cons
- Short dive times across the range.
- Depth limits are shallow.
- S700Max has only 4 reviews.
- Safety training and air quality are the buyer's responsibility.
Answers before you buy
Which is cheapest?
Which has the most air?
Which is best rated?
Which one includes a compressor?
Do I need training?
My pick: the S700Plus
The S700Plus has the best balance of air, depth, reviews and price. Start with the K2 if you want to test it cheaply and stay within 3 meters.
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