Saeyang Marathon 3 Champion + H37LSP Review UK (2026)

Same control unit as the popular H35LSP set, but with a step up in handpiece performance. The H37LSP delivers 30,000 rpm and 4.5 Ncm torque — the highest spec available in the Marathon 3 Champion range — at the same £180 price point.

If you're deciding between the H35LSP and H37LSP, this review explains the differences and who benefits from the upgrade.

Quick Verdict

The Champion + H37LSP is the top-performing configuration in the Marathon 3 Champion range. The extra torque and RPM make a real difference for acrylic work and heavier gel removal. At £180 — identical to the H35LSP — it's the natural choice for nail techs who work regularly with hard gels or acrylic extensions.

Best for: Nail technicians who work with hard gels, acrylics, or want headroom for demanding applications.
Compare with: Marathon 3 Champion + H35LSP — lighter handpiece, 28,000 rpm, slightly lower torque.

What's in the Box

• Marathon 3 Champion control unit (white)
• H37LSP handpiece
• Connecting cable
• Foot pedal
• UK power supply
• Instruction manual

Key Specifications

Verified Source

Saeyang Marathon 3 Champion + H37LSP

Torque:4.5 Ncm

Speed:30,000

Safety:Pro Session Ready

Technical Specifications

The highest-spec handpiece in the Marathon 3 Champion range. 30,000 rpm, 4.5 Ncm torque — built for nail techs who work with hard gels and acrylics.

£180GBP

Check Price at Coheal UK

| Specification | Detail | |---|---| | Max RPM | 35,000 rpm | | Power | 45W | | Handpiece model | H37LSP | | Shank size | 3/32" (2.35mm) — industry standard | | Direction | Forward / Reverse | | Speed control | Digital dial + foot pedal | | Suitable for | Nail tech, hard gel, acrylic, extensions | | UK plug | Yes | | Price | £180 |

H37LSP vs H35LSP — What Actually Changes

Both handpieces mount on the same Marathon 3 Champion control unit. The differences are in the handpiece motor itself:

| | H35LSP | H37LSP | |---|---|---| | Max RPM | 28,000 | 30,000 | | Torque | 4.2 Ncm | 4.5 Ncm | | Weight | ~90g (lighter) | ~95g | | Best for | All-round nail tech | Hard gel, acrylic, heavier work |

The 0.3 Ncm torque difference is small on paper but noticeable in practice when cutting through thick acrylic or hard gel — the H37LSP holds its speed under load where the H35LSP can lose a fraction of momentum.

For nail techs who primarily work on natural nails, gel polish, or soak-off services, the H35LSP's lighter weight may be preferable. For those doing significant acrylic or hard gel work, the H37LSP is the better tool.

Performance

Hard Gel and Acrylic

The H37LSP's stronger torque is most apparent here. Working through hard gel overlays at 20,000–25,000 rpm, the motor holds consistent speed without hunting. Acrylic removal is efficient and controlled.

Natural Nail Prep

Excellent — the extra power is simply unused at the low speeds needed for cuticle work. The handpiece is precise and low-vibration at these settings.

Gel Polish Removal

Efficient. The consistent torque means you spend less time on each nail, which matters during a busy service day.

Extended Sessions

Slightly warmer than the H35LSP under continuous heavy use, but within comfortable working range. For mixed services (some acrylics, some natural nails), you'll barely notice the difference.

Pros and Cons

Who Should Buy This?

Buy the H37LSP if:

• You regularly work with hard gels, acrylics, or nail extensions
• You want the best-performing handpiece in the Champion range without paying more
• You're looking for torque headroom for demanding clients

Buy the H35LSP instead if:

• You prioritise the lightest possible handpiece for all-day comfort
• Your work is primarily gel polish, natural nails, and soak-off services

How It Compares

Final Verdict

At the same price as the H35LSP, the H37LSP is the natural pick for any nail tech who works with hard gels or acrylics. The performance uplift is real and the cost difference is zero. If you're unsure which to choose — and you do any hard gel work at all — choose the H37LSP.

Rating: 9.5/10 — the best-performing configuration in the Champion range at this price.

Stocked and sold by Coheal UK — professional nail and podiatry equipment specialists.