A collage of different S.T. Dupont lighters for comparison.

How to Identify Your S.T. Dupont Lighter Model

Not sure which S.T. Dupont lighter you’re holding? Whether you just received one as a gift, inherited it from a family member, or found it tucked away in a drawer, it’s not always easy to tell which model you have. This guide was created to help you identify your S.T. Dupont lighter by showing key features, measurements, and model-specific details—all with side-by-side photos to make the process simple.

Identifying Line 1 Lighters

Standard / Small

  • ~59.6 x 35.6 x 13.5mm / ~47.7 x 35.6 x 13.5mm
  • Single Gas Refill Cover on the Bottom
  • Ligne 1 BS - Shut off Valve Under The Lid - Flame Can Not Be Adjusted
  • Ligne 1 BR - Flame Adjustment Wheel Located Under Lid 

Identifying New Line 1 Lighters

  • 51 x 37 x 12mm 
  • Flip-open lid with cap-spring mechanism
  • Covered refill port and adjustment knob on the bottom of the lighter
  • Traditional flint ignition
  • Dual Flame Ignition

Identifying Line 2 Lighters 

Standard / Small 

  • ~62 x 37 x 11 mm / ~56 x 32 x 10mm
  • Flip-open lid with cap-spring mechanism
  • Covered refill port and adjustment knob on the bottom of the lighter
  • Traditional flint ignition

 

Identifying Le Grand Lighters

  • Typical Size: ~ 66 x 39 x 14
  • Flame Type: Dual ignition (soft flame + torch flame)
  • Old Generation Lighters - Refill port and adjustment screw hidden beneath bottom flap
  •  New Le Grand (Cling) Models - Covered refill valve and adjustment screw on bottom

 

Identifying Gatsby Lighters

  • ~55.5 x 37.5 x 11 mm
  • Flame Type: Single or Double soft flame
  • Bottom Features: Covered gas refill port & 
  • Flame adjustment screw
  • Double Godron Pattern

 

Identifying Line D Lighters

  • ~57 x 31 x 11 mm
  • Flame Type: Single soft flame
  • Bottom Features:
  • Covered gas refill port
  • Flame adjustment screw
  • Angled Flame

 

Identifying D-Light Lighters

  • ~37 x 66 x 8 mm
  • Single soft flame
  • Ultra-thin rectangular body with smooth, minimalist lines.
  • Top-mounted roller positioned above the flame port.

 

Identifying Defi Jet Lighters

  • ~45 x 68 x 15 mm
  • Rectangular Shape with Black Bumpers
  • Side Trigger
  • Covered Jet Flame
  • Fuel Viewing Window

  • ~ 45 x 72 x 17mm
  • Rectangular Shape with Black Bumpers
  • Side Trigger
  • Covered Jet Flame
  • Fuel Viewing Window

 

Identifying Megajet Lighters

  • ~ 73 × 40 × 16 mm
  • Tall, rounded cushion-style body
  • Side Trigger
  • Uncovered Extra-Wide Flat Jet Flame Mechanism


Identifying Maxijet Lighters

  • ~ 65 × 37 × 13 mm
  • Taller, rounded cushion-style body
  • Side Trigger
  • Covered Single Jet Flame Mechanism

Identifying Minijet Lighters

  • ~ 55 × 33 × 12 mm 
  • Small, rounded cushion-style body
  • Side Trigger
  • Uncovered Single Flame Mechanism On Newer Models / Covered Mechanism On Older Models

 

Identifying Slim 7 Lighters

  • ~ 65 × 37 × 7 mm
  • Super Slim Rectangular Shape
  • Side Trigger
  • Uncovered Flat Jet Flame

 

Identifying Slimmy Lighters

  • ~ 67 × 37 × 9 mm
  • Super Slim Rectangular Shape
  • Side Trigger
  • Uncovered Flat Jet Flame

 

Identifying Biggy Lighters

  • ~ 73 × 40 × 16 mm
  • Super Slim Rectangular Shape
  • Side Trigger
  • Extra-wide Flat Jet flame

 

Identifying Twiggy Lighters

  • ~95 x 25 x 9.6mm
  • Tall Thin Rectangular Shape
  • Side Trigger
  • Uncovered Flat Jet Flame

Each model above links to a more detailed guide. If you need additional confirmation, click through to see full specifications, photos, and identifying features.

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