Price (USD)
G Pen Pro edgeG Pen Pro
$90
The Coma
$588
G Pen Pro is typically around $498 lower.
Vaporizer Comparison
G Pen Pro vs The Coma
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro
Grenco Science $90
VS
The Coma
Vices $588
Editorial Summary
G Pen Pro and The Coma are both convection / electronic vaporizers, but they target different priorities. G Pen Pro is usually the lower-cost pick at $90, around $498 below The Coma. Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
22
Different Specs
22
Shared Specs
0
Overall Overlap
0%
Shared Traits
Convection Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heating Style
Close callG Pen Pro
Convection
The Coma
Convection (wired ball vaporizer)
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
G Pen Pro
$90
The Coma
$588
Device Type
G Pen Pro
Portable
The Coma
Desktop
Heating Type
G Pen Pro
Convection
The Coma
Convection (wired ball vaporizer)
Temperature Range
G Pen Pro
190°C - 220°C (375°F - 428°F)
The Coma
200-300°C (392-572°F) recommended by Vices
Chamber Capacity
G Pen Pro
~0.25 grams
The Coma
0.2g to 1.6g
Battery Type
G Pen Pro
Internal
The Coma
None
Battery Capacity
G Pen Pro
2200mAh
The Coma
N/A
Charging
G Pen Pro
Micro-USB
The Coma
N/A
Power Adjustment
G Pen Pro
Modular - 3 Stages
The Coma
PID controller, switchable between °C and °F
Chamber Material
G Pen Pro
Ceramic
The Coma
Titanium Macro Bowl with an Everlasting titanium screen
Choose G Pen Pro if...
- You want the lower listed entry price ($90 vs $588).
- You prefer a convection heating profile.
- Your usage leans toward portable and budget sessions.
Choose The Coma if...
- You prefer a convection (wired ball vaporizer) heating profile.
- Your usage leans toward desktop and ball vape sessions.
- You prefer The Coma's overall feature mix and form factor.
Spec Comparison Table
Direct comparison of every spec from each device profile.
22 differ 0 shared
| Specification | G Pen Pro | The Coma |
|---|---|---|
| Price (USD) | $90 | $588 |
| Device Type | Portable | Desktop |
| Heating Type | Convection | Convection (wired ball vaporizer) |
| Heat Up Time | ~30 seconds | — |
| Temperature Range | 190°C - 220°C (375°F - 428°F) | 200-300°C (392-572°F) recommended by Vices |
| Chamber Capacity | ~0.25 grams | 0.2g to 1.6g |
| Battery Type | Internal | None |
| Battery Capacity | 2200mAh | N/A |
| Charging | Micro-USB | N/A |
| Charge Time | <3 hours | — |
| Power Adjustment | Modular - 3 Stages | PID controller, switchable between °C and °F |
| Chamber Material | Ceramic | Titanium Macro Bowl with an Everlasting titanium screen |
| Brand | Grenco Science | Vices |
| Coil Size | — | 35mm enclosed coil, wired directly to the PID |
| Heater Material | — | Titanium with an aluminium handle and heat sync hardware |
| Manufacturer | — | Vices, Brisbane Australia |
| Power Options | — | 110V (US and Canada) or 220V (AU, UK and EU) |
| Release Date | 2017 | 2026 |
| Session Style | Session | On-Demand |
| Thermal Matrix | — | ~3500 mixed cut ruby corundum gems, 2 to 2.5mm |
| Warranty | 1 year | Australian Consumer Law cover, no fixed term published. Consumables excluded |
| Water Pipe Adapter | — | 14mm glass joint fitted, 18mm spare included |
Comparison FAQs
What is the biggest difference between the G Pen Pro and the The Coma?
The biggest practical difference is price tier: the G Pen Pro sits at $90 while the The Coma is $588, a gap of about $498 that puts them in different buying brackets.
Which is cheaper, the G Pen Pro or the The Coma?
G Pen Pro is the cheaper option at $90 compared with $588 for the The Coma, about $498 less. Live retailer pricing can shift, so confirm before buying.
What's the difference in heating between the G Pen Pro and the The Coma?
G Pen Pro uses convection heating, while the The Coma uses convection (wired ball vaporizer). Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Does the G Pen Pro or the The Coma hold more flower?
The Coma has the larger chamber at 0.2g to 1.6g, versus ~0.25 grams on the G Pen Pro. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Is the G Pen Pro or the The Coma better for home versus on-the-go use?
G Pen Pro is the take-anywhere choice. It's a portable, battery-powered unit, while the The Coma is built for home use, where bigger heaters, AC power, and larger chambers make sense.
Can I set custom temperatures on the G Pen Pro or the The Coma?
G Pen Pro controls heat with modular - 3 stages, while the The Coma uses pid controller, switchable between °c and °f. Both let you change temperature, just with different levels of precision.
Which has a wider temperature range, the G Pen Pro or the The Coma?
The Coma covers 200-300°C (392-572°F) recommended by Vices, a wider band than the G Pen Pro at 190°C - 220°C (375°F - 428°F). A wider range gives you more room to dial in flavor at the low end and big clouds at the top.
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Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.