Price (USD)
Close callFirefly 2+
$250
G Pen Elite II
$250
Pricing is very close between both devices.
Vaporizer Comparison
Firefly 2+ vs G Pen Elite II
Side-by-side specs, pricing context, and clear decision guidance.
Firefly 2+
Firefly Vapor $250
VS
G Pen Elite II
Grenco Science $250
Editorial Summary
Firefly 2+ and G Pen Elite II are both portable / premium vaporizers, but they target different priorities. Their listed prices are close ($250 vs $250). Firefly 2+ has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
24
Different Specs
21
Shared Specs
3
Overall Overlap
13%
Shared Traits
Portable Premium Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
Firefly 2+ edgeFirefly 2+
~3 seconds
G Pen Elite II
~30 seconds
Firefly 2+ has the quicker listed heat-up profile.
Weight
Close callFirefly 2+
~140g
G Pen Elite II
146g
Weight is close enough that portability is likely similar.
Heating Style
Close callFirefly 2+
Convection
G Pen Elite II
Hybrid (Primarily Conduction)
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Heating Type
Firefly 2+
Convection
G Pen Elite II
Hybrid (Primarily Conduction)
Heat Up Time
Firefly 2+
~3 seconds
G Pen Elite II
~30 seconds
Temperature Range
Firefly 2+
93°C - 260°C
G Pen Elite II
93°C - 220°C (200°F - 428°F)
Chamber Capacity
Firefly 2+
~0.15g
G Pen Elite II
0.3 - 0.5 grams
Battery Type
Firefly 2+
Removable (proprietary)
G Pen Elite II
Internal
Battery Capacity
Firefly 2+
770mAh
G Pen Elite II
2100mAh
Battery Life
Firefly 2+
<90 minutes
G Pen Elite II
~1 hour of use
Charging
Firefly 2+
Proprietary Dock
G Pen Elite II
USB-C
Charge Time
Firefly 2+
~45 minutes
G Pen Elite II
90 minutes
Dimensions
Firefly 2+
129x36x24mm
G Pen Elite II
117x30x28mm
Choose Firefly 2+ if...
- You care about faster heat-up time for quicker sessions.
- You prefer a convection heating profile.
- Your usage leans toward battery swap and convection sessions.
Choose G Pen Elite II if...
- You prefer a hybrid (primarily conduction) heating profile.
- Your usage leans toward hybrid and conduction sessions.
- You prefer G Pen Elite II's overall feature mix and form factor.
Spec Comparison Table
Direct comparison of every spec from each device profile.
21 differ 3 shared
| Specification | Firefly 2+ | G Pen Elite II |
|---|---|---|
| Price (USD) | $250 | $250 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Hybrid (Primarily Conduction) |
| Heat Up Time | ~3 seconds | ~30 seconds |
| Temperature Range | 93°C - 260°C | 93°C - 220°C (200°F - 428°F) |
| Chamber Capacity | ~0.15g | 0.3 - 0.5 grams |
| Battery Type | Removable (proprietary) | Internal |
| Battery Capacity | 770mAh | 2100mAh |
| Battery Life | <90 minutes | ~1 hour of use |
| Charging | Proprietary Dock | USB-C |
| Charge Time | ~45 minutes | 90 minutes |
| Pass-Through Charging | No | — |
| Dimensions | 129x36x24mm | 117x30x28mm |
| Weight | ~140g | 146g |
| Power Adjustment | Digital (precise) | Digital Control |
| Chamber Material | Glass | Ceramic |
| Brand | Firefly Vapor | Grenco Science |
| Adjustable Airflow | — | Yes |
| Chamber Type | Ceramic | — |
| Display Type | — | High Resolution TFT (LCD) |
| Mouthpiece Material | — | Zirconia |
| Release Date | 2019 | 2022 |
| Session Style | On-Demand | Session |
| Warranty | 2 years | 2 years |
Comparison FAQs
What is the biggest difference between the Firefly 2+ and the G Pen Elite II?
The biggest practical difference is heating approach: Firefly 2+ runs convection while G Pen Elite II runs hybrid (primarily conduction). That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
Which heats up faster, the Firefly 2+ or the G Pen Elite II?
Firefly 2+ reaches session-ready temperature in ~3 seconds, while the G Pen Elite II takes ~30 seconds. That's roughly 27 seconds quicker on the Firefly 2+, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the Firefly 2+ and the G Pen Elite II?
Firefly 2+ uses convection heating, while the G Pen Elite II uses hybrid (primarily conduction). Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Does the Firefly 2+ or the G Pen Elite II hold more flower?
G Pen Elite II has the larger chamber at 0.3 - 0.5 grams, versus ~0.15g on the Firefly 2+. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Which has better battery life, the Firefly 2+ or the G Pen Elite II?
Firefly 2+ is rated for <90 minutes, ahead of ~1 hour of use on the G Pen Elite II. Real-world battery life depends on how high you set the temperature and how long sessions run.
Which is cheaper, the Firefly 2+ or the G Pen Elite II?
Listed prices are close: $250 for the Firefly 2+ versus $250 for the G Pen Elite II. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the Firefly 2+ or the G Pen Elite II?
Firefly 2+ uses removable (proprietary), so you can carry spares for back-to-back days. The G Pen Elite II has a built-in battery you can't swap on the go.
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