Price (USD)
Close callFocus V Carta Classic
$200
G Pen Roam
$200
Pricing is very close between both devices.
Vaporizer Comparison
Focus V Carta Classic vs G Pen Roam
Side-by-side specs, pricing context, and clear decision guidance.
Focus V Carta Classic
Focus V $200
VS
G Pen Roam
Grenco Science $200
Editorial Summary
Focus V Carta Classic and G Pen Roam are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($200 vs $200). Heat-up speed is broadly similar between the two.
Specs Compared
23
Different Specs
17
Shared Specs
6
Overall Overlap
26%
Shared Traits
Portable Electronic Concentrates
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
Close callFocus V Carta Classic
~10 Seconds
G Pen Roam
~5 seconds
Both devices are in a similar heat-up range.
Heating Style
Close callFocus V Carta Classic
Conduction
G Pen Roam
Conduction
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Heat Up Time
Focus V Carta Classic
~10 Seconds
G Pen Roam
~5 seconds
Temperature Range
Focus V Carta Classic
600°F - 940°F
G Pen Roam
204°C - 427°C (400°F - 800°F)
Battery Type
Focus V Carta Classic
2x 18350 Batteries
G Pen Roam
Internal
Battery Capacity
Focus V Carta Classic
2400mAh (1200mAh x 2)
G Pen Roam
1300mAh
Battery Life
Focus V Carta Classic
~40-50 sessions
G Pen Roam
15-20 sessions
Charging
Focus V Carta Classic
USB-C
G Pen Roam
Micro-USB
Power Adjustment
Focus V Carta Classic
Modular - 4 Stages or Precision Control via App
G Pen Roam
Digital Control
Chamber Material
Focus V Carta Classic
Ceramic
G Pen Roam
Quartz
Brand
Focus V Carta Classic
Focus V
G Pen Roam
Grenco Science
Release Date
Focus V Carta Classic
2023
G Pen Roam
2020
Choose Focus V Carta Classic if...
- Your usage leans toward conduction and battery swap sessions.
- You prefer Focus V Carta Classic's overall feature mix and form factor.
- You value how the Focus V Carta Classic balances size, controls, and everyday practicality.
Choose G Pen Roam if...
- You prefer G Pen Roam's overall feature mix and form factor.
- You value how the G Pen Roam balances size, controls, and everyday practicality.
Spec Comparison Table
Direct comparison of every spec from each device profile.
17 differ 6 shared
| Specification | Focus V Carta Classic | G Pen Roam |
|---|---|---|
| Price (USD) | $200 | $200 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~10 Seconds | ~5 seconds |
| Temperature Range | 600°F - 940°F | 204°C - 427°C (400°F - 800°F) |
| Battery Type | 2x 18350 Batteries | Internal |
| Battery Capacity | 2400mAh (1200mAh x 2) | 1300mAh |
| Battery Life | ~40-50 sessions | 15-20 sessions |
| Charging | USB-C | Micro-USB |
| Charge Time | ~2 Hours | ~2 hours |
| Bluetooth / App | Yes | — |
| Dimensions | — | 178x127x102mm |
| Weight | — | ~317g |
| Power Adjustment | Modular - 4 Stages or Precision Control via App | Digital Control |
| Chamber Material | Ceramic | Quartz |
| Concentrate Support | Yes | Yes |
| Brand | Focus V | Grenco Science |
| Adjustable Airflow | — | No |
| Display Type | — | LED |
| Haptic Feedback | — | Yes |
| Release Date | 2023 | 2020 |
| Session Style | Session | — |
| Warranty | 1 year | 1 year |
Comparison FAQs
What is the biggest difference between the Focus V Carta Classic and the G Pen Roam?
There's no single headline gap. The differences are spread across 17 smaller spec rows rather than concentrated in one place. The spec table below marks each row that differs.
Which heats up faster, the Focus V Carta Classic or the G Pen Roam?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the Focus V Carta Classic takes ~10 Seconds. That's roughly 5 seconds quicker on the G Pen Roam, which is useful if you want shorter, on-demand sessions.
Which is cheaper, the Focus V Carta Classic or the G Pen Roam?
Listed prices are close: $200 for the Focus V Carta Classic versus $200 for the G Pen Roam. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the Focus V Carta Classic or the G Pen Roam?
Focus V Carta Classic uses 2x 18350 batteries, so you can carry spares for back-to-back days. The G Pen Roam has a built-in battery you can't swap on the go.
What battery life can I expect from the Focus V Carta Classic and the G Pen Roam?
Focus V Carta Classic's spec sheet lists ~40-50 sessions; the G Pen Roam lists 15-20 sessions. The two manufacturers measure battery life differently here, so direct comparison isn't straightforward.
Can I use concentrates with the Focus V Carta Classic or the G Pen Roam?
Both devices support concentrate use, typically via an included or aftermarket pad or insert. Check the manual for the recommended approach for each.
Which uses USB-C, the Focus V Carta Classic or the G Pen Roam?
Focus V Carta Classic 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.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.