Price (USD)
Close callG Pen Roam
$100
XMAX Starry V3
$100
Pricing is very close between both devices.
Vaporizer Comparison
G Pen Roam vs XMAX Starry V3
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
XMAX Starry V3
XMAX from $85.95
Editorial Summary
G Pen Roam and XMAX Starry V3 are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($100 vs $100). G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
27
Different Specs
20
Shared Specs
7
Overall Overlap
26%
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 Starry V3
~30 seconds
G Pen Roam has the quicker listed heat-up profile.
Weight
XMAX Starry V3 edgeG Pen Roam
~317g
XMAX Starry V3
120g
XMAX Starry V3 is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
XMAX Starry V3
Conduction
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Heat Up Time
G Pen Roam
~5 seconds
XMAX Starry V3
~30 seconds
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
XMAX Starry V3
212°F - 464°F
Battery Type
G Pen Roam
Internal
XMAX Starry V3
18650
Battery Capacity
G Pen Roam
1300mAh
XMAX Starry V3
2600mAh
Battery Life
G Pen Roam
15-20 sessions
XMAX Starry V3
60-80 minutes
Charge Time
G Pen Roam
~2 hours
XMAX Starry V3
90-120 minutes
Weight
G Pen Roam
~317g
XMAX Starry V3
120g
Power Adjustment
G Pen Roam
Digital Control
XMAX Starry V3
Digital (precise)
Chamber Material
G Pen Roam
Quartz
XMAX Starry V3
Ceramic
Brand
G Pen Roam
Grenco Science
XMAX Starry V3
XMAX
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.
Lowest price
$49.95
at G Pen
Choose XMAX Starry V3 if...
- You want the lighter unit for carrying and travel.
- Your usage leans toward conduction and budget sessions.
- You prefer XMAX Starry V3's overall feature mix and form factor.
Current price
$85.95
at VPM
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.
20 differ 7 shared
| Specification | G Pen Roam | XMAX Starry V3 |
|---|---|---|
| Price (USD) | $100 | $100 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~5 seconds | ~30 seconds |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 212°F - 464°F |
| Chamber Capacity | — | 0.3g |
| Battery Type | Internal | 18650 |
| Battery Capacity | 1300mAh | 2600mAh |
| Battery Life | 15-20 sessions | 60-80 minutes |
| Charging | Micro-USB | Micro USB |
| Charge Time | ~2 hours | 90-120 minutes |
| Pass-Through Charging | — | Yes |
| Dimensions | — | 11 x 3.5 x 2.4 cm |
| Weight | ~317g | 120g |
| Power Adjustment | Digital Control | Digital (precise) |
| Chamber Material | Quartz | Ceramic |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | XMAX |
| Adjustable Airflow | No | No |
| Country of Manufacture | — | China |
| Display Type | LED | OLED |
| Haptic Feedback | Yes | Yes |
| Manufacturer | — | TopGreen Technology Co |
| Release Date | 2020 | 2019 |
| Replaceable Battery | — | Yes |
| Session Style | — | Session |
| Warranty | 1 year | 1 year |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the XMAX Starry V3?
The biggest practical difference is portability: the XMAX Starry V3 is roughly 197g lighter than the G Pen Roam, which adds up over a day of pocket carry.
Which heats up faster, the G Pen Roam or the XMAX Starry V3?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the XMAX Starry V3 takes ~30 seconds. That's roughly 25 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 XMAX Starry V3?
XMAX Starry V3 is the lighter unit at 120g, around 197g less than the G Pen Roam at ~317g. The lighter device is easier to carry and pocket day-to-day.
Which is cheaper, the G Pen Roam or the XMAX Starry V3?
Listed prices are close: $100 for the G Pen Roam versus $100 for the XMAX Starry V3. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the G Pen Roam or the XMAX Starry V3?
XMAX Starry V3 uses 18650, 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.
Which charges faster, the G Pen Roam or the XMAX Starry V3?
XMAX Starry V3 fully charges in 90-120 minutes, ahead of ~2 hours on the G Pen Roam.
Which is more discreet, the G Pen Roam or the XMAX Starry V3?
XMAX Starry V3 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.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.