Price (USD)
Tempest 2 edgeG Pen Roam
$200
Tempest 2
$179
Tempest 2 is typically around $21 lower.
Vaporizer Comparison
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science $200
Tempest 2
Mad Heaters $179
G Pen Roam and Tempest 2 are both portable vaporizers, but they target different priorities. Tempest 2 is usually the lower-cost pick at $179, around $21 below G Pen Roam. 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
A quick snapshot of the specs people usually care about first.
G Pen Roam
$200
Tempest 2
$179
Tempest 2 is typically around $21 lower.
G Pen Roam
~5 seconds
Tempest 2
~30-45 seconds with torch
G Pen Roam has the quicker listed heat-up profile.
G Pen Roam
~317g
Tempest 2
46g
Tempest 2 is the lighter listed unit.
G Pen Roam
Conduction
Tempest 2
Convection-heavy with thermal ball matrix
Heating style differs, which can impact flavor and extraction behavior.
Top specs where these two devices diverge.
Price (USD)
G Pen Roam
$200
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
Dimensions
G Pen Roam
178x127x102mm
Tempest 2
122mm x 18.5mm
Direct comparison of every spec from each device profile.
| Specification | G Pen Roam | Tempest 2 |
|---|---|---|
| Price (USD) | $200 | $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 | 178x127x102mm | 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 |
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.
Tempest 2 is the cheaper option at $179 compared with $200 for the G Pen Roam, about $21 less. Live retailer pricing can shift, so confirm before buying.
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.
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.
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.
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.
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.
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.