Price (USD)
G Pen Roam edgeFocus V Carta Classic
$200
G Pen Roam
$100
G Pen Roam is typically around $100 lower.
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 from $49.95
Editorial Summary
Focus V Carta Classic and G Pen Roam are both portable / electronic vaporizers, but they target different priorities. G Pen Roam is usually the lower-cost pick at $100, around $100 below Focus V Carta Classic. Heat-up speed is broadly similar between the two.
Specs Compared
22
Different Specs
17
Shared Specs
5
Overall Overlap
23%
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.
Price (USD)
Focus V Carta Classic
$200
G Pen Roam
$100
Heat Up Time
Focus V Carta Classic
~10 Seconds
G Pen Roam
~5 seconds
Temperature Range
Focus V Carta Classic
500°F - 850°F presets (320°F - 900°F via app)
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
Titanium & Quartz
G Pen Roam
Quartz
Brand
Focus V Carta Classic
Focus V
G Pen Roam
Grenco Science
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 want the lower listed entry price ($100 vs $200).
- 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.
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.
17 differ 5 shared
| Specification | Focus V Carta Classic | G Pen Roam |
|---|---|---|
| Price (USD) | $200 | $100 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~10 Seconds | ~5 seconds |
| Temperature Range | 500°F - 850°F presets (320°F - 900°F via app) | 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 | — |
| Weight | — | ~317g |
| Power Adjustment | Modular - 4 Stages or Precision Control via App | Digital Control |
| Chamber Material | Titanium & Quartz | Quartz |
| Concentrate Support | Yes | Yes |
| Brand | Focus V | Grenco Science |
| Adjustable Airflow | — | No |
| Display Type | — | LED |
| Haptic Feedback | — | Yes |
| Release Date | 2019 | 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?
The biggest practical difference is price tier: the G Pen Roam sits at $100 while the Focus V Carta Classic is $200, a gap of about $100 that puts them in different buying brackets.
Which is cheaper, the Focus V Carta Classic or the G Pen Roam?
G Pen Roam is the cheaper option at $100 compared with $200 for the Focus V Carta Classic, about $100 less. Live retailer pricing can shift, so confirm before buying.
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.
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.