Price (USD)
Close callDryonic II
$95
G Pen Roam
$100
Pricing is very close between both devices.
Vaporizer Comparison
Dryonic II vs G Pen Roam
Side-by-side specs, pricing context, and clear decision guidance.
Dryonic II
O2VAPE $95
VS
G Pen Roam
Grenco Science from $49.95
Editorial Summary
Dryonic II and G Pen Roam are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($95 vs $100). G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
22
Different Specs
18
Shared Specs
4
Overall Overlap
18%
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 edgeDryonic II
<50 Seconds
G Pen Roam
~5 seconds
G Pen Roam has the quicker listed heat-up profile.
Heating Style
Close callDryonic II
Convection
G Pen Roam
Conduction
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
Dryonic II
$95
G Pen Roam
$100
Heating Type
Dryonic II
Convection
G Pen Roam
Conduction
Heat Up Time
Dryonic II
<50 Seconds
G Pen Roam
~5 seconds
Temperature Range
Dryonic II
200-430°F
G Pen Roam
204°C - 427°C (400°F - 800°F)
Battery Capacity
Dryonic II
1200mAh
G Pen Roam
1300mAh
Battery Life
Dryonic II
~1 hour
G Pen Roam
15-20 sessions
Power Adjustment
Dryonic II
Digital - 5 degree increments
G Pen Roam
Digital Control
Brand
Dryonic II
O2VAPE
G Pen Roam
Grenco Science
Display Type
Dryonic II
OLED
G Pen Roam
LED
Choose Dryonic II if...
- You prefer a convection heating profile.
- Your usage leans toward convection and discrete sessions.
- You prefer Dryonic II's overall feature mix and form factor.
Choose G Pen Roam if...
- 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
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.
18 differ 4 shared
| Specification | Dryonic II | G Pen Roam |
|---|---|---|
| Price (USD) | $95 | $100 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Conduction |
| Heat Up Time | <50 Seconds | ~5 seconds |
| Temperature Range | 200-430°F | 204°C - 427°C (400°F - 800°F) |
| Chamber Capacity | <0.5g | — |
| Battery Type | — | Internal |
| Battery Capacity | 1200mAh | 1300mAh |
| Battery Life | ~1 hour | 15-20 sessions |
| Charging | Micro-USB | Micro-USB |
| Charge Time | — | ~2 hours |
| Weight | — | ~317g |
| Power Adjustment | Digital - 5 degree increments | Digital Control |
| Chamber Material | Quartz | Quartz |
| Concentrate Support | — | Yes |
| Brand | O2VAPE | Grenco Science |
| Adjustable Airflow | — | No |
| Display Type | OLED | LED |
| Haptic Feedback | — | Yes |
| Manufacturer | O2VAPE | — |
| Release Date | — | 2020 |
| Warranty | 1 year | 1 year |
Comparison FAQs
What is the biggest difference between the Dryonic II and the G Pen Roam?
The biggest practical difference is heating approach: Dryonic II runs convection while G Pen Roam runs conduction. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
Which heats up faster, the Dryonic II or the G Pen Roam?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the Dryonic II takes <50 Seconds. That's roughly 45 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 Dryonic II and the G Pen Roam?
Dryonic II uses convection heating, while the G Pen Roam uses conduction. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Which is cheaper, the Dryonic II or the G Pen Roam?
Listed prices are close: $95 for the Dryonic II versus $100 for the G Pen Roam. Day-to-day price will likely come down to whichever retailer is running a promotion.
Which is more discreet, the Dryonic II or the G Pen Roam?
Dryonic II is the better pick if low-profile use matters. It's tagged as stealth or pocket-friendly in our database, while the G Pen Roam is more conspicuous in hand and harder to keep out of sight.
What battery life can I expect from the Dryonic II and the G Pen Roam?
Dryonic II's spec sheet lists ~1 hour; the G Pen Roam lists 15-20 sessions. The two manufacturers measure battery life differently here, so direct comparison isn't straightforward.
How similar are the Dryonic II and the G Pen Roam?
Across the 22 specs we line up, they share 4 and differ on 18, an overlap of about 18%. The differences are concentrated in the areas the spec table highlights with a marker.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.