Price (USD)
XMAX OONT edgeG Pen Roam
$200
XMAX OONT
$50
XMAX OONT is typically around $150 lower.
Vaporizer Comparison
G Pen Roam vs XMAX OONT
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science $200
VS
XMAX OONT
XMAX $50
Editorial Summary
G Pen Roam and XMAX OONT are both portable / electronic vaporizers, but they target different priorities. XMAX OONT is usually the lower-cost pick at $50, around $150 below G Pen Roam. 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
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
XMAX OONT
~20 seconds
G Pen Roam has the quicker listed heat-up profile.
Heating Style
Close callG Pen Roam
Conduction
XMAX OONT
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
$200
XMAX OONT
$50
Heat Up Time
G Pen Roam
~5 seconds
XMAX OONT
~20 seconds
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
XMAX OONT
180℃-220℃ (356℉-428℉)
Battery Type
G Pen Roam
Internal
XMAX OONT
Internal 18500
Battery Capacity
G Pen Roam
1300mAh
XMAX OONT
1500mAh
Battery Life
G Pen Roam
15-20 sessions
XMAX OONT
12+ sessions
Charging
G Pen Roam
Micro-USB
XMAX OONT
USB-C
Dimensions
G Pen Roam
178x127x102mm
XMAX OONT
51.14 x 27.40 x 74.5mm
Power Adjustment
G Pen Roam
Digital Control
XMAX OONT
5 Preset Modes
Chamber Material
G Pen Roam
Quartz
XMAX OONT
Stainless Steel
Choose G Pen Roam if...
- You care about faster heat-up time for quicker sessions.
- Your usage leans toward concentrates sessions.
- You prefer G Pen Roam's overall feature mix and form factor.
Choose XMAX OONT if...
- You want the lower listed entry price ($50 vs $200).
- Your usage leans toward conduction and budget sessions.
- You prefer XMAX OONT's overall feature mix and form factor.
Spec Comparison Table
Direct comparison of every spec from each device profile.
21 differ 4 shared
| Specification | G Pen Roam | XMAX OONT |
|---|---|---|
| Price (USD) | $200 | $50 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~5 seconds | ~20 seconds |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 180℃-220℃ (356℉-428℉) |
| Battery Type | Internal | Internal 18500 |
| Battery Capacity | 1300mAh | 1500mAh |
| Battery Life | 15-20 sessions | 12+ sessions |
| Charging | Micro-USB | USB-C |
| Charge Time | ~2 hours | ~2 hours |
| Dimensions | 178x127x102mm | 51.14 x 27.40 x 74.5mm |
| Weight | ~317g | — |
| Power Adjustment | Digital Control | 5 Preset Modes |
| Chamber Material | Quartz | Stainless Steel |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | XMAX |
| Adjustable Airflow | No | — |
| Country of Manufacture | — | China |
| Display Type | LED | — |
| Haptic Feedback | Yes | — |
| Manufacturer | — | TopGreen Technology Co |
| Release Date | 2020 | 2023 |
| Replaceable Battery | — | No |
| Session Style | — | Session |
| Warranty | 1 year | 1 year |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the XMAX OONT?
The biggest practical difference is price tier: the XMAX OONT sits at $50 while the G Pen Roam is $200, a gap of about $150 that puts them in different buying brackets.
Which is cheaper, the G Pen Roam or the XMAX OONT?
XMAX OONT is the cheaper option at $50 compared with $200 for the G Pen Roam, about $150 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Roam or the XMAX OONT?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the XMAX OONT takes ~20 seconds. That's roughly 15 seconds quicker on the G Pen Roam, which is useful if you want shorter, on-demand sessions.
Can I set custom temperatures on the G Pen Roam or the XMAX OONT?
G Pen Roam controls heat with digital control, while the XMAX OONT uses 5 preset modes. G Pen Roam gives you finer per-degree control.
Which is more discreet, the G Pen Roam or the XMAX OONT?
XMAX OONT is the better pick if low-profile use matters. It's tagged as stealth or pocket-friendly in our database, while the G Pen Roam is more conspicuous in hand and harder to keep out of sight.
What battery life can I expect from the G Pen Roam and the XMAX OONT?
G Pen Roam's spec sheet lists 15-20 sessions; the XMAX OONT lists 12+ sessions. The two manufacturers measure battery life differently here, so direct comparison isn't straightforward.
Which has a wider temperature range, the G Pen Roam or the XMAX OONT?
G Pen Roam covers 204°C - 427°C (400°F - 800°F), a wider band than the XMAX OONT at 180℃-220℃ (356℉-428℉). A wider range gives you more room to dial in flavor at the low end and big clouds at the top.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.