Experience longer underwater work sessions with the TUDIVING S700Plus portable scuba cylinder, a compact, dependable companion that keeps your breath steady when you need it most.

TUDIVING S700Plus Portable Scuba Cylinder

Designed for longer underwater sessions, this compact 2L cylinder from TUDIVING delivers a steady breath and dependable performance when you need it most. The regulator is separated from the body and requires assembly by you, keeping your setup lightweight for travel and adaptable to your preferred configuration.

• 2L capacity at 3000 psi (200 bar / 20 MPa) provides an estimated 30–45 minutes of underwater breathing depending on depth, temperature, and breathing rate.
• DOT-certified and CE-listed for peace of mind and regulatory compliance in diverse environments.
• 6061 aviation aluminum construction with seawater-resistant surface coating to resist corrosion in harsh marine conditions.
• S700 pressure regulator with an air switch, explosion-proof valve, 8mm charging interface, telescopic pressure gauge, and a pressure-reducing chamber for reliable delivery.
• SRCPEG constant pressure air outlet system decompresses high-pressure gas and maintains a steady flow through the medium-pressure tube for easy, effortless breathing underwater.
• 360° rotatable joint paired with a pressure-resistant medium-pressure tube, enabling comfortable, unrestricted movement in any orientation—perfect for underwater photography, exploration, or tasks in awkward positions.
• Backpack-style design replaces the traditional vest, making it easier to carry the cylinder hands-free while you swim, dive, or work.
• Extension tube to pressure gauge for quick, at-a-glance remaining gas checks without disturbing your dive plan.
• Three inflation methods offer flexible filling options for different environments and equipment setups.
• Lifetime customer support from TUDIVING – we’re ready to help with assembly, setup, and care questions whenever you need it.

The S700Plus isn’t just a gas source—it’s a versatile dive companion built to supplement a range of underwater activities. With the regulator separated from the body, you have room to customize connections, whether you’re pairing it with a compact camera setup for underwater photography, conducting routine hull or propeller maintenance, or simply enjoying an extended snorkeling or shallow-water excursion with extended air supply.

Ideal use cases

• Underwater photography and videography where a reliable, easily monitored air supply helps you stay focused on framing and timing rather than worrying about gas levels.
• Exploration and macro-science dives where a compact, easily portable gas source reduces bulk while delivering smooth airflow.
• Underwater inspection, maintenance, and repair work on boats, docks, or underwater structures where hands-free mobility is beneficial.
• Emergency or safety scenarios where a readily accessible air source can provide a thoughtful redundancy during operations.

How this cylinder compares to alternatives

Compared with bulkier or less-regulated options, the S700Plus prioritizes portability, precise gas delivery, and resilience in marine environments. Its 2L form factor keeps weight manageable for travel, while the 360° rotatable joint and constant pressure output minimize ergonomic strain during extended sessions. The backpack-style design further distinguishes it by freeing your hands, which is especially valuable when you’re handling cameras, tools, or delicate underwater gear.

Practical tips to maximize performance

• Pre-dive assembly: Double-check the regulator-to-body connections and ensure the pressure gauge is functional before entering the water.
• Gauge check: Use the extension tube to monitor remaining gas quickly—plan your dive around a conservative gas margin.
• Depth considerations: Deeper dives and colder temperatures can reduce available bottom time; anticipate conservative air usage in challenging conditions.
• Maintenance: Rinse the cylinder and regulator with fresh water after saltwater use to preserve the corrosion-resistant finish and extend life.
• Storage: Keep the cylinder in a cool, dry place away from direct sunlight to maintain material integrity and regulator performance.

Included with purchase is the TUDIVING S700Plus mini scuba cylinder. Note that the regulator is shipped separately and requires user assembly; refer to the main product pictures for details on the exact configuration. If you have questions after delivery, you can contact us anytime—lifetime support is available to ensure you get the most from your cylinder.

Whether you’re chasing underwater photography breakthroughs, exploring wrecks, or performing routine maintenance below the surface, the TUDIVING S700Plus combines portability, reliability, and thoughtful design to help you dive longer, dive smarter, and dive with confidence.