Price (USD)
G Pen Roam edgeG Pen Roam
$100
Zeus Arc GT4
$260
G Pen Roam is typically around $160 lower.
Vaporizer Comparison
G Pen Roam vs Zeus Arc GT4
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
Zeus Arc GT4
Zeus Arsenal $260
Editorial Summary
G Pen Roam and Zeus Arc GT4 are both portable / electronic vaporizers, but they target different priorities. G Pen Roam is usually the lower-cost pick at $100, around $160 below Zeus Arc GT4. G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
25
Different Specs
21
Shared Specs
4
Overall Overlap
16%
Shared Traits
Portable Electronic Concentrates
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
G Pen Roam edgeG Pen Roam
~5 seconds
Zeus Arc GT4
~35 seconds
G Pen Roam has the quicker listed heat-up profile.
Weight
Zeus Arc GT4 edgeG Pen Roam
~317g
Zeus Arc GT4
~121 grams
Zeus Arc GT4 is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
Zeus Arc GT4
Conduction
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
G Pen Roam
$100
Zeus Arc GT4
$260
Heat Up Time
G Pen Roam
~5 seconds
Zeus Arc GT4
~35 seconds
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
Zeus Arc GT4
195-225°C (383-437°F) herb, 235-255°C (455-491°F) wax
Battery Capacity
G Pen Roam
1300mAh
Zeus Arc GT4
3500mAh
Battery Life
G Pen Roam
15-20 sessions
Zeus Arc GT4
~6-8 sessions per charge
Charging
G Pen Roam
Micro-USB
Zeus Arc GT4
USB-C (5V, 2.5A, 12.5W)
Charge Time
G Pen Roam
~2 hours
Zeus Arc GT4
~90 minutes
Weight
G Pen Roam
~317g
Zeus Arc GT4
~121 grams
Power Adjustment
G Pen Roam
Digital Control
Zeus Arc GT4
Presets (6 herb levels, 3 wax levels)
Chamber Material
G Pen Roam
Quartz
Zeus Arc GT4
24K gold coated
Choose G Pen Roam if...
- You want the lower listed entry price ($100 vs $260).
- You care about faster heat-up time for quicker sessions.
- You prefer G Pen Roam's overall feature mix and form factor.
Lowest price
$49.95
at G Pen
Choose Zeus Arc GT4 if...
- You want the lighter unit for carrying and travel.
- Your usage leans toward conduction and discrete sessions.
- You prefer Zeus Arc GT4's overall feature mix and form factor.
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.
21 differ 4 shared
| Specification | G Pen Roam | Zeus Arc GT4 |
|---|---|---|
| Price (USD) | $100 | $260 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~5 seconds | ~35 seconds |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 195-225°C (383-437°F) herb, 235-255°C (455-491°F) wax |
| Chamber Capacity | — | Up to ~0.4g in an ArcPod, spacer included for smaller loads |
| Battery Type | Internal | Internal |
| Battery Capacity | 1300mAh | 3500mAh |
| Battery Life | 15-20 sessions | ~6-8 sessions per charge |
| Charging | Micro-USB | USB-C (5V, 2.5A, 12.5W) |
| Charge Time | ~2 hours | ~90 minutes |
| Dimensions | — | 86.5 x 42.5 x 22.5mm |
| Weight | ~317g | ~121 grams |
| Power Adjustment | Digital Control | Presets (6 herb levels, 3 wax levels) |
| Chamber Material | Quartz | 24K gold coated |
| Concentrate Support | Yes | Yes, via the WaxPod and a dedicated wax mode |
| Brand | Grenco Science | Zeus Arsenal |
| Adjustable Airflow | No | Yes (Flow Sink in for a restricted draw, out for a free draw) |
| Display Type | LED | 3 LED status interface |
| Haptic Feedback | Yes | Yes |
| Manufacturer | — | Thermodyne Systems |
| Release Date | 2020 | 2025 |
| Session Style | — | Session (6 minute herb cycle, ~2 minute wax cycle) |
| Warranty | 1 year | 2 years, extendable to 3 with registration (battery 3 months) |
| Water Pipe Adapter | — | Included, fits 14mm and 18mm glass |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the Zeus Arc GT4?
The biggest practical difference is price tier: the G Pen Roam sits at $100 while the Zeus Arc GT4 is $260, a gap of about $160 that puts them in different buying brackets.
Which is cheaper, the G Pen Roam or the Zeus Arc GT4?
G Pen Roam is the cheaper option at $100 compared with $260 for the Zeus Arc GT4, about $160 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Roam or the Zeus Arc GT4?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the Zeus Arc GT4 takes ~35 seconds. That's roughly 30 seconds quicker on the G Pen Roam, which is useful if you want shorter, on-demand sessions.
Which is lighter, the G Pen Roam or the Zeus Arc GT4?
Zeus Arc GT4 is the lighter unit at ~121 grams, around 196g less than the G Pen Roam at ~317g. The lighter device is easier to carry and pocket day-to-day.
Can I set custom temperatures on the G Pen Roam or the Zeus Arc GT4?
G Pen Roam controls heat with digital control, while the Zeus Arc GT4 uses presets (6 herb levels, 3 wax levels). G Pen Roam gives you finer per-degree control.
Which charges faster, the G Pen Roam or the Zeus Arc GT4?
Zeus Arc GT4 fully charges in ~90 minutes, ahead of ~2 hours on the G Pen Roam.
Can I use the G Pen Roam or the Zeus Arc GT4 with a water pipe?
Only the Zeus Arc GT4 has a documented water-pipe adapter option. The G Pen Roam doesn't list one, though aftermarket adapters sometimes exist for popular models.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.