SMACO S400 Plus – Compact 1 L cylinder

Greater autonomy for longer underwater interventions
The 1-liter cylinder provides approximately 10–15 minutes of air, ideal for under-hull work that requires more time.

Technical emergency tool, not recreational diving equipment
Designed for targeted interventions: anchor recovery, hull inspection, propeller and sea intake checks, small repairs.

Compact yet more capable
Maintains a reduced footprint while offering a larger air reserve compared to smaller models.

Integrated regulator, immediate use
No complex setup: ready to use in seconds.

Rechargeable with filtered compressed air
Via the INCLUDED dedicated accessory, usable at diving centers or with standard cylinders.

Smart solution to increase onboard safety
A reliable air reserve always available, without fixed installations.

Do you want more autonomy compared to the S300 while maintaining compactness and simplicity
Do you need to carry out slightly longer underwater interventions
Are you looking for a practical safety feature for your boat
Do you want to avoid the bulk and complexity of a full scuba system
Are you aware that it does not replace diving training or equipment
Do you prefer a ready-to-use, lightweight, and versatile solution

Safety warnings and recommended maintenance

Important warnings
The use of underwater breathing apparatus requires proper training and adequate skills
This is not a toy and is not suitable for inexperienced users
Never hold your breath during descent or ascent
Do not exceed the indicated depth and autonomy limits
In case of malfunctions or leaks, stop use immediately
Use only filtered and certified compressed air
Avoid use in case of colds, sinusitis, respiratory problems, or unsuitable physical conditions

Maintenance and care
Always rinse the device with fresh water after use at sea
Dry completely before storage
Periodically check O-rings and seals
Do not leave the pressurized cylinder exposed to sunlight or high temperatures
If possible, depressurize the cylinder after use
Store in a dry, ventilated, and protected place
Carry out periodic checks and inspections at specialized centers, according to the date indicated on the cylinder
Treat the product as a scuba cylinder in all respects

Proper maintenance is essential for user safety and for the longevity of the device.

Certifications of conformity and usage limits
This device is life-support equipment and must be used with competence and awareness.

Certifications and compliance
CE, TÜV, DOT certification
Product compliant with international standards for refilling with filtered compressed air
Suitable for refilling at diving centers and specialized operators, in accordance with current regulations

Usage limits
Recommended maximum depth: up to 10 m (depending on the model)
Indicative autonomy: 5–10 minutes, variable depending on depth, consumption, and conditions
Usable by one person at a time
Not designed for recreational, sport, or prolonged diving
Does not replace a traditional SCUBA system or a diving course

This product is conceived as a compact support and emergency system, not as full diving equipment.