Less gear. More water time.
Hookah (surface-supplied) diving is how commercial divers have worked for decades. WOLACH makes it portable, battery-powered and simple enough for recreational divers.
Side by side
Read the full comparison Tank vs. tankless
| Traditional scuba tank | WOLACH tankless | |
|---|---|---|
| Air supply | One tank ≈ 45–60 min at 10 m | Up to 10 hours per charge |
| Refills | Dive shop or compressor | Any wall socket |
| Weight on your back | 15–20 kg with BCD | Light harness only |
| Travel | Tanks can't fly; rent at destination | UN38.3 battery, ships worldwide |
| Depth range | Up to 40 m (recreational) | 8–29 m depending on model |
| Buddy & ascent rules | Required | Required — same NDL rules apply |
| Running cost per dive | $12–37 per tank | Under $0.10 electricity |
Cost calculator
What tanks really cost you.
Assumes $12 per fill, $25 rental per tank, ~50 min per tank at 10 m, $1,400 owned scuba set and $120/yr service. WOLACH: S6-6H plus a $39 annual filter kit. Electricity under $0.10 per charge.
Your 3-year saving with WOLACH
$7,904
Pays for itself after about 12 dives.
Common questions
Do I need a diving certification?
Yes. These are surface-supplied breathing systems for certified divers (Open Water or equivalent). Always dive with a buddy, a dive computer and within no-decompression limits.
How deep can I go?
S6 is rated to 8 m, S7 to 12 m, S9 to 20 m and S77 to 29 m. Always dive to the rated depth, never the laboratory-tested figure.
What happens if the battery runs low?
The unit sounds a low-battery alarm and the display shows remaining charge. Plan to start your ascent with at least 25% remaining, and carry a spare-air cylinder.