Price (USD)
Close callG Pen Roam
$200
OG Jams
$200
Pricing is very close between both devices.
Vaporizer Comparison
G Pen Roam vs OG Jams
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science $200
VS
OG Jams
The Kind Pen $200
Editorial Summary
G Pen Roam and OG Jams are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($200 vs $200). Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
23
Different Specs
19
Shared Specs
4
Overall Overlap
17%
Shared Traits
Portable Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Weight
G Pen Roam edgeG Pen Roam
~317g
OG Jams
~369g
G Pen Roam is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
OG Jams
Conduction
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
OG Jams
302°F - 446°F
Battery Capacity
G Pen Roam
1300mAh
OG Jams
2000mAh
Battery Life
G Pen Roam
15-20 sessions
OG Jams
~3-4 hours
Charging
G Pen Roam
Micro-USB
OG Jams
USB-C
Charge Time
G Pen Roam
~2 hours
OG Jams
~1-2 hours
Dimensions
G Pen Roam
178x127x102mm
OG Jams
4 x 2.5 x 2.5 inches
Weight
G Pen Roam
~317g
OG Jams
~369g
Power Adjustment
G Pen Roam
Digital Control
OG Jams
Digital
Chamber Material
G Pen Roam
Quartz
OG Jams
Ceramic
Brand
G Pen Roam
Grenco Science
OG Jams
The Kind Pen
Choose G Pen Roam if...
- You want the lighter unit for carrying and travel.
- Your usage leans toward concentrates sessions.
- You prefer G Pen Roam's overall feature mix and form factor.
Choose OG Jams if...
- Your usage leans toward conduction sessions.
- You prefer OG Jams's overall feature mix and form factor.
- You value how the OG Jams balances size, controls, and everyday practicality.
Spec Comparison Table
Direct comparison of every spec from each device profile.
19 differ 4 shared
| Specification | G Pen Roam | OG Jams |
|---|---|---|
| Price (USD) | $200 | $200 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~5 seconds | — |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 302°F - 446°F |
| Chamber Capacity | — | 1 gram |
| Battery Type | Internal | — |
| Battery Capacity | 1300mAh | 2000mAh |
| Battery Life | 15-20 sessions | ~3-4 hours |
| Charging | Micro-USB | USB-C |
| Charge Time | ~2 hours | ~1-2 hours |
| Dimensions | 178x127x102mm | 4 x 2.5 x 2.5 inches |
| Weight | ~317g | ~369g |
| Power Adjustment | Digital Control | Digital |
| Chamber Material | Quartz | Ceramic |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | The Kind Pen |
| Adjustable Airflow | No | Yes |
| Display Type | LED | OLED |
| Haptic Feedback | Yes | Yes |
| Release Date | 2020 | — |
| Session Style | — | Session |
| Warranty | 1 year | Lifetime |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the OG Jams?
There's no single headline gap. The differences are spread across 19 smaller spec rows rather than concentrated in one place. The spec table below marks each row that differs.
Which is lighter, the G Pen Roam or the OG Jams?
G Pen Roam is the lighter unit at ~317g, around 52g less than the OG Jams at ~369g. The lighter device is easier to carry and pocket day-to-day.
Which is cheaper, the G Pen Roam or the OG Jams?
Listed prices are close: $200 for the G Pen Roam versus $200 for the OG Jams. Day-to-day price will likely come down to whichever retailer is running a promotion.
Which charges faster, the G Pen Roam or the OG Jams?
OG Jams fully charges in ~1-2 hours, ahead of ~2 hours on the G Pen Roam.
What battery life can I expect from the G Pen Roam and the OG Jams?
G Pen Roam's spec sheet lists 15-20 sessions; the OG Jams lists ~3-4 hours. The two manufacturers measure battery life differently here, so direct comparison isn't straightforward.
Which uses USB-C, the G Pen Roam or the OG Jams?
OG Jams charges over USB-C; the G Pen Roam uses a Micro-USB port. USB-C means one fewer cable to keep around if your phone and laptop already use it.
How similar are the G Pen Roam and the OG Jams?
Across the 23 specs we line up, they share 4 and differ on 19, an overlap of about 17%. 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.