Price (USD)
G Pen Roam edgeG Pen Roam
$100
Tempest 2
$179
G Pen Roam is typically around $79 lower.
Vaporizer Comparison
G Pen Roam vs Tempest 2
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
Tempest 2
Mad Heaters from £149.17 GBP
Editorial Summary
G Pen Roam and Tempest 2 are both portable vaporizers, but they target different priorities. G Pen Roam is usually the lower-cost pick at $100, around $79 below Tempest 2. G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
24
Different Specs
22
Shared Specs
2
Overall Overlap
8%
Shared Traits
Portable
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
Tempest 2
~30-45 seconds with torch
G Pen Roam has the quicker listed heat-up profile.
Weight
Tempest 2 edgeG Pen Roam
~317g
Tempest 2
46g
Tempest 2 is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
Tempest 2
Convection-heavy with thermal ball matrix
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
Tempest 2
$179
Heating Type
G Pen Roam
Conduction
Tempest 2
Convection-heavy with thermal ball matrix
Heat Up Time
G Pen Roam
~5 seconds
Tempest 2
~30-45 seconds with torch
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
Tempest 2
N/A
Battery Type
G Pen Roam
Internal
Tempest 2
None
Battery Capacity
G Pen Roam
1300mAh
Tempest 2
N/A
Battery Life
G Pen Roam
15-20 sessions
Tempest 2
N/A
Charging
G Pen Roam
Micro-USB
Tempest 2
N/A
Charge Time
G Pen Roam
~2 hours
Tempest 2
N/A
Weight
G Pen Roam
~317g
Tempest 2
46g
Choose G Pen Roam if...
- You want the lower listed entry price ($100 vs $179).
- You care about faster heat-up time for quicker sessions.
- You prefer a conduction heating profile.
- Your usage leans toward electronic and concentrates sessions.
Lowest price
$49.95
at G Pen
Choose Tempest 2 if...
- You want the lighter unit for carrying and travel.
- You prefer a convection-heavy with thermal ball matrix heating profile.
- Your usage leans toward analog and premium sessions.
Current price
£149.17GBP
at Mad Heaters
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.
22 differ 2 shared
| Specification | G Pen Roam | Tempest 2 |
|---|---|---|
| Price (USD) | $100 | $179 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Convection-heavy with thermal ball matrix |
| Heat Up Time | ~5 seconds | ~30-45 seconds with torch |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | N/A |
| Chamber Capacity | — | 0.1g - 0.2g (adjustable) |
| Battery Type | Internal | None |
| Battery Capacity | 1300mAh | N/A |
| Battery Life | 15-20 sessions | N/A |
| Charging | Micro-USB | N/A |
| Charge Time | ~2 hours | N/A |
| Dimensions | — | 122mm x 18.5mm |
| Weight | ~317g | 46g |
| Power Adjustment | Digital Control | Visual gauge with click indicators |
| Chamber Material | Quartz | Titanium |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | Mad Heaters |
| Adjustable Airflow | No | Yes |
| Body Material | — | Grade 5 titanium, aluminum heat shield, stainless steel |
| Country of Manufacture | — | Made in China, Assembled in the UK |
| Display Type | LED | — |
| Haptic Feedback | Yes | — |
| Release Date | 2020 | — |
| Warranty | 1 year | 1 year |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the Tempest 2?
The biggest practical difference is heating approach: G Pen Roam runs conduction while Tempest 2 runs convection-heavy with thermal ball matrix. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
Which is cheaper, the G Pen Roam or the Tempest 2?
G Pen Roam is the cheaper option at $100 compared with $179 for the Tempest 2, about $79 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Roam or the Tempest 2?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the Tempest 2 takes ~30-45 seconds with torch. 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 Tempest 2?
G Pen Roam uses conduction heating, while the Tempest 2 uses convection-heavy with thermal ball matrix. 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 Tempest 2?
Tempest 2 is the lighter unit at 46g, around 271g 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 Tempest 2?
G Pen Roam controls heat with digital control, while the Tempest 2 uses visual gauge with click indicators. G Pen Roam gives you finer per-degree control.
What battery life can I expect from the G Pen Roam and the Tempest 2?
G Pen Roam's spec sheet lists 15-20 sessions; the Tempest 2 lists N/A. The two manufacturers measure battery life differently here, so direct comparison isn't straightforward.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.