Price (USD)
G Pen Pro edgeFirefly 2+
$250
G Pen Pro
$90
G Pen Pro is typically around $160 lower.
Vaporizer Comparison
Firefly 2+ vs G Pen Pro
Side-by-side specs, pricing context, and clear decision guidance.
Firefly 2+
Firefly Vapor $250
VS
G Pen Pro
Grenco Science $90
Editorial Summary
Firefly 2+ and G Pen Pro are both portable / convection vaporizers, but they target different priorities. G Pen Pro is usually the lower-cost pick at $90, around $160 below Firefly 2+. Firefly 2+ has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
21
Different Specs
19
Shared Specs
2
Overall Overlap
10%
Shared Traits
Portable Convection 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 Pro
~30 seconds
Firefly 2+ has the quicker listed heat-up profile.
Heating Style
Close callFirefly 2+
Convection
G Pen Pro
Convection
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
Firefly 2+
$250
G Pen Pro
$90
Heat Up Time
Firefly 2+
~3 seconds
G Pen Pro
~30 seconds
Temperature Range
Firefly 2+
93°C - 260°C
G Pen Pro
190°C - 220°C (375°F - 428°F)
Chamber Capacity
Firefly 2+
~0.15g
G Pen Pro
~0.25 grams
Battery Type
Firefly 2+
Removable (proprietary)
G Pen Pro
Internal
Battery Capacity
Firefly 2+
770mAh
G Pen Pro
2200mAh
Charging
Firefly 2+
Proprietary Dock
G Pen Pro
Micro-USB
Charge Time
Firefly 2+
~45 minutes
G Pen Pro
<3 hours
Power Adjustment
Firefly 2+
Digital (precise)
G Pen Pro
Modular - 3 Stages
Chamber Material
Firefly 2+
Glass
G Pen Pro
Ceramic
Choose Firefly 2+ if...
- You care about faster heat-up time for quicker sessions.
- Your usage leans toward premium and battery swap sessions.
- You prefer Firefly 2+'s overall feature mix and form factor.
Typical price
$250
Sold by The Stash Shack
Choose G Pen Pro if...
- You want the lower listed entry price ($90 vs $250).
- Your usage leans toward budget sessions.
- You prefer G Pen Pro's overall feature mix and form factor.
Prices are read automatically from retailer pages; confirm the price at checkout. Some links are affiliate links, which support Thermal Extractions at no extra cost to you.
Spec Comparison Table
Direct comparison of every spec from each device profile.
19 differ 2 shared
| Specification | Firefly 2+ | G Pen Pro |
|---|---|---|
| Price (USD) | $250 | $90 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Convection |
| Heat Up Time | ~3 seconds | ~30 seconds |
| Temperature Range | 93°C - 260°C | 190°C - 220°C (375°F - 428°F) |
| Chamber Capacity | ~0.15g | ~0.25 grams |
| Battery Type | Removable (proprietary) | Internal |
| Battery Capacity | 770mAh | 2200mAh |
| Battery Life | <90 minutes | — |
| Charging | Proprietary Dock | Micro-USB |
| Charge Time | ~45 minutes | <3 hours |
| Pass-Through Charging | No | — |
| Dimensions | 129x36x24mm | — |
| Weight | ~140g | — |
| Power Adjustment | Digital (precise) | Modular - 3 Stages |
| Chamber Material | Glass | Ceramic |
| Brand | Firefly Vapor | Grenco Science |
| Chamber Type | Ceramic | — |
| Release Date | 2019 | 2017 |
| Session Style | On-Demand | Session |
| Warranty | 2 years | 1 year |
Comparison FAQs
What is the biggest difference between the Firefly 2+ and the G Pen Pro?
The biggest practical difference is price tier: the G Pen Pro sits at $90 while the Firefly 2+ is $250, a gap of about $160 that puts them in different buying brackets.
Which is cheaper, the Firefly 2+ or the G Pen Pro?
G Pen Pro is the cheaper option at $90 compared with $250 for the Firefly 2+, about $160 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the Firefly 2+ or the G Pen Pro?
Firefly 2+ reaches session-ready temperature in ~3 seconds, while the G Pen Pro takes ~30 seconds. That's roughly 27 seconds quicker on the Firefly 2+, which is useful if you want shorter, on-demand sessions.
Does the Firefly 2+ or the G Pen Pro hold more flower?
G Pen Pro has the larger chamber at ~0.25 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.
Can I swap the batteries on the Firefly 2+ or the G Pen Pro?
Firefly 2+ uses removable (proprietary), so you can carry spares for back-to-back days. The G Pen Pro has a built-in battery you can't swap on the go.
Can I set custom temperatures on the Firefly 2+ or the G Pen Pro?
Firefly 2+ controls heat with digital (precise), while the G Pen Pro uses modular - 3 stages. Firefly 2+ gives you finer per-degree control.
Which charges faster, the Firefly 2+ or the G Pen Pro?
Firefly 2+ fully charges in ~45 minutes, ahead of <3 hours on the G Pen Pro.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.