Price (USD)
G Pen Roam edgeG Pen Roam
$100
PAX FOUR
$250
G Pen Roam is typically around $150 lower.
Vaporizer Comparison
G Pen Roam vs PAX FOUR
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
PAX FOUR
PAX Labs $250
Editorial Summary
G Pen Roam and PAX FOUR are both portable / electronic vaporizers, but they target different priorities. G Pen Roam is usually the lower-cost pick at $100, around $150 below PAX FOUR. G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
24
Different Specs
23
Shared Specs
1
Overall Overlap
4%
Shared Traits
Portable Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
G Pen Roam edgeG Pen Roam
~5 seconds
PAX FOUR
55-70 seconds
G Pen Roam has the quicker listed heat-up profile.
Weight
PAX FOUR edgeG Pen Roam
~317g
PAX FOUR
125 grams
PAX FOUR is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
PAX FOUR
Hybrid (conduction and convection)
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 Roam
$100
PAX FOUR
$250
Heating Type
G Pen Roam
Conduction
PAX FOUR
Hybrid (conduction and convection)
Heat Up Time
G Pen Roam
~5 seconds
PAX FOUR
55-70 seconds
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
PAX FOUR
190-220°C (374-428°F)
Battery Type
G Pen Roam
Internal
PAX FOUR
Internal lithium-ion
Battery Capacity
G Pen Roam
1300mAh
PAX FOUR
2800mAh
Battery Life
G Pen Roam
15-20 sessions
PAX FOUR
Up to 5 sessions, about 50 minutes of run time
Charging
G Pen Roam
Micro-USB
PAX FOUR
USB-C
Charge Time
G Pen Roam
~2 hours
PAX FOUR
~90 minutes
Weight
G Pen Roam
~317g
PAX FOUR
125 grams
Choose G Pen Roam if...
- You want the lower listed entry price ($100 vs $250).
- You care about faster heat-up time for quicker sessions.
- You prefer a conduction heating profile.
- Your usage leans toward concentrates sessions.
Lowest price
$49.95
at G Pen
Choose PAX FOUR if...
- You want the lighter unit for carrying and travel.
- You prefer a hybrid (conduction and convection) heating profile.
- Your usage leans toward hybrid and discrete sessions.
Typical price
$250
Sold by The Stash Shack
Prices are read automatically from retailer pages and were last checked Aug 27, 2026; 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.
23 differ 1 shared
| Specification | G Pen Roam | PAX FOUR |
|---|---|---|
| Price (USD) | $100 | $250 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Hybrid (conduction and convection) |
| Heat Up Time | ~5 seconds | 55-70 seconds |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 190-220°C (374-428°F) |
| Chamber Capacity | — | ~0.3g |
| Battery Type | Internal | Internal lithium-ion |
| Battery Capacity | 1300mAh | 2800mAh |
| Battery Life | 15-20 sessions | Up to 5 sessions, about 50 minutes of run time |
| Charging | Micro-USB | USB-C |
| Charge Time | ~2 hours | ~90 minutes |
| Dimensions | — | 108 x 36 x 29mm |
| Weight | ~317g | 125 grams |
| Power Adjustment | Digital Control | Four preset heat modes (purple, green, yellow, orange) |
| Chamber Material | Quartz | Stainless steel |
| Concentrate Support | Yes | No (not compatible with the PAX Concentrate Insert) |
| Brand | Grenco Science | PAX Labs |
| Adjustable Airflow | No | No (flat and raised mouthpieces change the draw) |
| Display Type | LED | LED petals |
| Haptic Feedback | Yes | — |
| Manufacturer | — | PAX Labs, Inc (model X410) |
| Release Date | 2020 | 2026 |
| Session Style | — | Session |
| Warranty | 1 year | 2 years, plus 1 year when registered within 30 days |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the PAX FOUR?
The biggest practical difference is price tier: the G Pen Roam sits at $100 while the PAX FOUR is $250, a gap of about $150 that puts them in different buying brackets.
Which is cheaper, the G Pen Roam or the PAX FOUR?
G Pen Roam is the cheaper option at $100 compared with $250 for the PAX FOUR, about $150 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Roam or the PAX FOUR?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the PAX FOUR takes 55-70 seconds. That's roughly 58 seconds quicker on the G Pen Roam, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the G Pen Roam and the PAX FOUR?
G Pen Roam uses conduction heating, while the PAX FOUR uses hybrid (conduction and convection). Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Which is lighter, the G Pen Roam or the PAX FOUR?
PAX FOUR is the lighter unit at 125 grams, around 192g less than the G Pen Roam at ~317g. The lighter device is easier to carry and pocket day-to-day.
Can I use concentrates with the G Pen Roam or the PAX FOUR?
Only the G Pen Roam supports concentrates out of the box. The PAX FOUR is dry-herb-only by design.
Can I set custom temperatures on the G Pen Roam or the PAX FOUR?
G Pen Roam controls heat with digital control, while the PAX FOUR uses four preset heat modes (purple, green, yellow, orange). G Pen Roam gives you finer per-degree control.
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