Judge by empty ceramic 1.8 Ω versus a Caliburn-class refillable pod kit, not by an MTL lifestyle photo.

Step 1. Read SPECTRUM: empty hardware. A Caliburn-class kit with a refillable pod is a different job.

Step 2. Read 1.8 Ω ceramic. Do not import a Caliburn coil print.

Step 3. Read 66 × 36 mm. Thickness remains unknown.

Step 4. Confirm no oil in the SPECTRUM box story.

Step 5. Use the WINDBAR wattage calculator with 1.8 Ω if that is the SPECTRUM print. Packaging wattage still wins.