Price (USD)
Close callG Pen Roam
$100
XMAX Starry 4
$99
Pricing is very close between both devices.
Vaporizer Comparison
G Pen Roam vs XMAX Starry 4
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
XMAX Starry 4
XMAX from $99
Editorial Summary
G Pen Roam and XMAX Starry 4 are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($100 vs $99). G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
27
Different Specs
23
Shared Specs
4
Overall Overlap
15%
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 4
~15 seconds
G Pen Roam has the quicker listed heat-up profile.
Weight
XMAX Starry 4 edgeG Pen Roam
~317g
XMAX Starry 4
~137g
XMAX Starry 4 is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
XMAX Starry 4
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
XMAX Starry 4
$99
Heat Up Time
G Pen Roam
~5 seconds
XMAX Starry 4
~15 seconds
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
XMAX Starry 4
100℃-240℃ (212℉-464℉)
Battery Type
G Pen Roam
Internal
XMAX Starry 4
18650
Battery Capacity
G Pen Roam
1300mAh
XMAX Starry 4
2550mAh
Battery Life
G Pen Roam
15-20 sessions
XMAX Starry 4
~60 minutes
Charging
G Pen Roam
Micro-USB
XMAX Starry 4
USB-C
Charge Time
G Pen Roam
~2 hours
XMAX Starry 4
~3 hours
Weight
G Pen Roam
~317g
XMAX Starry 4
~137g
Power Adjustment
G Pen Roam
Digital Control
XMAX Starry 4
Digital (precise)
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 4 if...
- You want the lighter unit for carrying and travel.
- Your usage leans toward conduction and budget sessions.
- You prefer XMAX Starry 4's overall feature mix and form factor.
Lowest price
$99
at The Stash Shack
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.
23 differ 4 shared
| Specification | G Pen Roam | XMAX Starry 4 |
|---|---|---|
| Price (USD) | $100 | $99 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~5 seconds | ~15 seconds |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 100℃-240℃ (212℉-464℉) |
| Chamber Capacity | — | 0.4g |
| Battery Type | Internal | 18650 |
| Battery Capacity | 1300mAh | 2550mAh |
| Battery Life | 15-20 sessions | ~60 minutes |
| Charging | Micro-USB | USB-C |
| Charge Time | ~2 hours | ~3 hours |
| Pass-Through Charging | — | No |
| Dimensions | — | 115.9 x 37.5 x 24mm |
| Weight | ~317g | ~137g |
| Power Adjustment | Digital Control | Digital (precise) |
| Chamber Material | Quartz | Ceramic |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | XMAX |
| Adjustable Airflow | No | Yes |
| Country of Manufacture | — | China |
| Display Type | LED | OLED |
| Haptic Feedback | Yes | Yes |
| Manufacturer | — | TopGreen Technology Co |
| Release Date | 2020 | 2023 |
| 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 4?
The biggest practical difference is portability: the XMAX Starry 4 is roughly 180g 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 4?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the XMAX Starry 4 takes ~15 seconds. That's roughly 10 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 4?
XMAX Starry 4 is the lighter unit at ~137g, around 180g 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 4?
Listed prices are close: $100 for the G Pen Roam versus $99 for the XMAX Starry 4. 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 4?
XMAX Starry 4 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 4?
G Pen Roam fully charges in ~2 hours, ahead of ~3 hours on the XMAX Starry 4.
Which is more discreet, the G Pen Roam or the XMAX Starry 4?
XMAX Starry 4 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.