Fler Signature 1mL Empty Disposable – Auto Draw Vape Pen

The Fler Signature is a sleek, fill-your-own empty disposable vape pen with a refined soft touch black finish and a slim pen-style form factor that looks and feels premium. At just 100mm tall and 20mm wide (roughly 3.9″ × 0.8″), it’s one of the most compact empty disposables on the market — closer in size to a standard ink pen than a typical vape device. The 1mL tank, 280mAh USB-C rechargeable battery, four 1.5mm oil intake holes, and 1.4 ohm resistance at a fixed 3.5V output are tuned specifically for distillate and live resin viscosities. Auto draw activation means no buttons — just fill, seal, and inhale. The snap-in mouthpiece keeps the seal secure during use but allows for clean, controlled filling through the top. If you fill your own cartridges for personal use or operate a small brand looking for clean, discreet hardware that doesn’t look like a gas station disposable, the Fler Signature delivers a professional-grade device at a competitive price point.

Ultra-Slim Pen-Style Design — Soft Touch Black Finish

The Fler Signature is built around discretion and aesthetics. The matte black soft touch paint gives the body a velvety, non-slip texture that’s comfortable to hold, resistant to fingerprints, and visually clean. The slim rectangular profile (100mm × 20mm × 10.5mm) slides into a pocket, purse, or palm without any bulk. There’s no flashy branding, no oversized tanks, no chunky battery housing — just a minimal, refined device that could pass for a sleek tech accessory. For brands and operators, the understated design provides a premium canvas for custom labeling.

Auto Draw — No Buttons, No Complexity

The Fler Signature is inhale-activated. Once filled and sealed, simply draw from the mouthpiece to fire the heating element. No buttons to press, no voltage to set, no preheat to trigger. The device operates at a fixed 3.5V output at 1.4 ohm resistance — a tuned combination that delivers consistent, flavorful vapor optimized for standard oil viscosities without any user adjustment required.

Four 1.5mm Oil Intake Holes — Consistent Wicking

The heating element is fed by four evenly spaced 1.5mm oil intake apertures that control the flow of oil to the coil. The quad-hole design ensures balanced saturation from all sides, preventing the dry hits and flooding issues that single or dual-hole designs can produce. The 1.5mm diameter is sized for distillate and live resin viscosities — thick enough to prevent thin oils from flooding, open enough to wick properly with standard-viscosity concentrates.

280mAh Rechargeable Battery with USB-C

The 280mAh lithium-ion battery is rechargeable via USB-C, providing enough power to fully vaporize the 1mL tank without dying prematurely. The rechargeable design eliminates the most common complaint about disposable vapes — batteries that quit before the oil runs out. When the battery gets low, plug in any standard USB-C cable for a quick recharge. The device is rechargeable but not refillable — once the oil is depleted, dispose of responsibly.

Snap-In Mouthpiece — Secure Seal, Easy Fill

The mouthpiece snaps firmly into place for a secure, leak-resistant seal during use. To fill, remove the mouthpiece, use a blunt-tip syringe to dispense oil into the tank, and snap the mouthpiece back into position. The snap-in design is easier to work with than press-fit mouthpieces that require excessive force, and more secure than friction-fit designs that can pop off in a pocket or bag.

How to Fill

Warm your oil to approximately 122°F (50°C) for optimal flow. Remove the snap-in mouthpiece. Using a blunt-tip syringe, carefully inject oil into the tank — fill slowly to avoid air pockets. Do not overfill. Snap the mouthpiece back into place firmly until it clicks. After filling, let the device rest upside down for 30 minutes, then upright for 30 minutes to allow the coil to fully saturate before your first draw. This priming step prevents dry hits and ensures smooth vapor from the first puff.

Recommended Oils

The Fler Signature is recommended for distillate and live resin. The 1.4 ohm resistance and four 1.5mm intake holes are calibrated for standard cannabis oil viscosities. Very thick oils like live rosin or hash rosin may not wick properly — for those materials, consider a postless device like the iKrusher Styx Pro. For the best flavor and vapor quality, use your filled device within two weeks of filling.

Storage & Care

Store filled devices upright in a cool, dry place between 68°F–77°F. Avoid extreme temperatures, direct sunlight, and pressure changes. Do not leave in a hot car or freezing conditions — both can affect oil consistency and battery performance.

Browse more empty oil disposables, explore empty 510 cartridges, or check out the full dispensary supplies selection at Discount Vape Pen.

Package Contents

• 1x Fler Signature Empty Disposable Vape Pen (1mL, Black)

Note: Ships empty — oil, concentrate, syringe, and USB-C charging cable sold separately. This device is rechargeable but not refillable. Once sealed and emptied, dispose of responsibly.