Price (USD)
G Pen Roam edgeFocus V Carta 2
$350
G Pen Roam
$100
G Pen Roam is typically around $250 lower.
Vaporizer Comparison
Focus V Carta 2 vs G Pen Roam
Side-by-side specs, pricing context, and clear decision guidance.
Focus V Carta 2
Focus V $350
VS
G Pen Roam
Grenco Science from $49.95
Editorial Summary
Focus V Carta 2 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 $250 below Focus V Carta 2. Heat-up speed is broadly similar between the two.
Specs Compared
24
Different Specs
19
Shared Specs
5
Overall Overlap
21%
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 2
5 - 10 Seconds
G Pen Roam
~5 seconds
Both devices are in a similar heat-up range.
Weight
G Pen Roam edgeFocus V Carta 2
~422g
G Pen Roam
~317g
G Pen Roam is the lighter listed unit.
Heating Style
Close callFocus V Carta 2
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 2
$350
G Pen Roam
$100
Heat Up Time
Focus V Carta 2
5 - 10 Seconds
G Pen Roam
~5 seconds
Temperature Range
Focus V Carta 2
365°F - 635°F
G Pen Roam
204°C - 427°C (400°F - 800°F)
Battery Capacity
Focus V Carta 2
2000mAh
G Pen Roam
1300mAh
Battery Life
Focus V Carta 2
~10 sessions
G Pen Roam
15-20 sessions
Charging
Focus V Carta 2
USB-C
G Pen Roam
Micro-USB
Charge Time
Focus V Carta 2
~90 minutes
G Pen Roam
~2 hours
Weight
Focus V Carta 2
~422g
G Pen Roam
~317g
Power Adjustment
Focus V Carta 2
Digital
G Pen Roam
Digital Control
Chamber Material
Focus V Carta 2
Ceramic
G Pen Roam
Quartz
Choose Focus V Carta 2 if...
- Your usage leans toward conduction and premium sessions.
- You prefer Focus V Carta 2's overall feature mix and form factor.
- You value how the Focus V Carta 2 balances size, controls, and everyday practicality.
Typical price
$350
Sold by The Stash Shack
Choose G Pen Roam if...
- You want the lower listed entry price ($100 vs $350).
- You want the lighter unit for carrying and travel.
- You prefer G Pen Roam's overall feature mix and form factor.
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.
19 differ 5 shared
| Specification | Focus V Carta 2 | G Pen Roam |
|---|---|---|
| Price (USD) | $350 | $100 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | 5 - 10 Seconds | ~5 seconds |
| Temperature Range | 365°F - 635°F | 204°C - 427°C (400°F - 800°F) |
| Chamber Capacity | N/A | — |
| Battery Type | Internal | Internal |
| Battery Capacity | 2000mAh | 1300mAh |
| Battery Life | ~10 sessions | 15-20 sessions |
| Charging | USB-C | Micro-USB |
| Charge Time | ~90 minutes | ~2 hours |
| Pass-Through Charging | Yes | — |
| Dimensions | 184x67mm | — |
| Weight | ~422g | ~317g |
| Power Adjustment | Digital | Digital Control |
| Chamber Material | Ceramic | Quartz |
| Concentrate Support | Yes | Yes |
| Brand | Focus V | Grenco Science |
| Adjustable Airflow | — | No |
| Display Type | OLED | LED |
| Haptic Feedback | — | Yes |
| Release Date | 2022 | 2020 |
| Warranty | 1 year | 1 year |
| Wireless Charging | Yes | — |
Comparison FAQs
What is the biggest difference between the Focus V Carta 2 and the G Pen Roam?
The biggest practical difference is price tier: the G Pen Roam sits at $100 while the Focus V Carta 2 is $350, a gap of about $250 that puts them in different buying brackets.
Which is cheaper, the Focus V Carta 2 or the G Pen Roam?
G Pen Roam is the cheaper option at $100 compared with $350 for the Focus V Carta 2, about $250 less. Live retailer pricing can shift, so confirm before buying.
Which is lighter, the Focus V Carta 2 or the G Pen Roam?
G Pen Roam is the lighter unit at ~317g, around 105g less than the Focus V Carta 2 at ~422g. The lighter device is easier to carry and pocket day-to-day.
Which heats up faster, the Focus V Carta 2 or the G Pen Roam?
Heat-up times are very close: 5 - 10 Seconds on the Focus V Carta 2 and ~5 seconds on the G Pen Roam. The real-world difference will be hard to notice mid-session.
Which charges faster, the Focus V Carta 2 or the G Pen Roam?
Focus V Carta 2 fully charges in ~90 minutes, ahead of ~2 hours on the G Pen Roam.
What battery life can I expect from the Focus V Carta 2 and the G Pen Roam?
Focus V Carta 2's spec sheet lists ~10 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 2 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.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.