Price (USD)
G Pen Roam edgeG Pen Roam
$100
PAX FLOW
$350
G Pen Roam is typically around $250 lower.
Vaporizer Comparison
G Pen Roam vs PAX FLOW
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
PAX FLOW
PAX Labs from $279.95
Editorial Summary
G Pen Roam and PAX FLOW are both portable / electronic vaporizers, but they target different priorities. G Pen Roam is usually the lower-cost pick at $100, around $250 below PAX FLOW. G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
23
Different Specs
20
Shared Specs
3
Overall Overlap
13%
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 FLOW
30-45 seconds
G Pen Roam has the quicker listed heat-up profile.
Weight
PAX FLOW edgeG Pen Roam
~317g
PAX FLOW
135 grams
PAX FLOW is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
PAX FLOW
Hybrid (conduction + 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 FLOW
$350
Heating Type
G Pen Roam
Conduction
PAX FLOW
Hybrid (conduction + convection)
Heat Up Time
G Pen Roam
~5 seconds
PAX FLOW
30-45 seconds
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
PAX FLOW
180°C - 225°C (356°F - 437°F)
Battery Capacity
G Pen Roam
1300mAh
PAX FLOW
2000mAh (internal)
Battery Life
G Pen Roam
15-20 sessions
PAX FLOW
~30 minutes (about 3 sessions)
Charging
G Pen Roam
Micro-USB
PAX FLOW
USB-C
Charge Time
G Pen Roam
~2 hours
PAX FLOW
~20 minutes to 50%, ~40 minutes to full (USB-C)
Weight
G Pen Roam
~317g
PAX FLOW
135 grams
Power Adjustment
G Pen Roam
Digital Control
PAX FLOW
Four petal modes + Bong Mode
Choose G Pen Roam if...
- You want the lower listed entry price ($100 vs $350).
- 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 FLOW if...
- You want the lighter unit for carrying and travel.
- You prefer a hybrid (conduction + convection) heating profile.
- Your usage leans toward hybrid and discrete sessions.
Lowest price
$279.95
at VPM
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.
20 differ 3 shared
| Specification | G Pen Roam | PAX FLOW |
|---|---|---|
| Price (USD) | $100 | $350 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Hybrid (conduction + convection) |
| Heat Up Time | ~5 seconds | 30-45 seconds |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 180°C - 225°C (356°F - 437°F) |
| Chamber Capacity | — | 0.25g - 0.35g |
| Battery Type | Internal | Internal |
| Battery Capacity | 1300mAh | 2000mAh (internal) |
| Battery Life | 15-20 sessions | ~30 minutes (about 3 sessions) |
| Charging | Micro-USB | USB-C |
| Charge Time | ~2 hours | ~20 minutes to 50%, ~40 minutes to full (USB-C) |
| Dimensions | — | 107mm x 34.5mm x 29mm |
| Weight | ~317g | 135 grams |
| Power Adjustment | Digital Control | Four petal modes + Bong Mode |
| Chamber Material | Quartz | Stainless Steel |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | PAX Labs |
| Adjustable Airflow | No | No |
| Display Type | LED | — |
| Haptic Feedback | Yes | — |
| Release Date | 2020 | 2025 |
| Session Style | — | Session |
| Warranty | 1 year | 2 years (4 with registration) |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the PAX FLOW?
The biggest practical difference is price tier: the G Pen Roam sits at $100 while the PAX FLOW is $350, a gap of about $250 that puts them in different buying brackets.
Which is cheaper, the G Pen Roam or the PAX FLOW?
G Pen Roam is the cheaper option at $100 compared with $350 for the PAX FLOW, about $250 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Roam or the PAX FLOW?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the PAX FLOW takes 30-45 seconds. That's roughly 33 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 FLOW?
G Pen Roam uses conduction heating, while the PAX FLOW uses hybrid (conduction + 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 FLOW?
PAX FLOW is the lighter unit at 135 grams, around 182g less than the G Pen Roam at ~317g. The lighter device is easier to carry and pocket day-to-day.
Can I set custom temperatures on the G Pen Roam or the PAX FLOW?
G Pen Roam controls heat with digital control, while the PAX FLOW uses four petal modes + bong mode. G Pen Roam gives you finer per-degree control.
Which charges faster, the G Pen Roam or the PAX FLOW?
PAX FLOW fully charges in ~20 minutes to 50%, ~40 minutes to full (USB-C), ahead of ~2 hours on the G Pen Roam.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.