Price (USD)
XMAX Starry 4 edgeG Pen Roam
$200
XMAX Starry 4
$99
XMAX Starry 4 is typically around $101 lower.
Vaporizer Comparison
G Pen Roam vs XMAX Starry 4
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science $200
VS
XMAX Starry 4
XMAX $99
Editorial Summary
G Pen Roam and XMAX Starry 4 are both portable / electronic vaporizers, but they target different priorities. XMAX Starry 4 is usually the lower-cost pick at $99, around $101 below G Pen Roam. 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
$200
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
~90 minutes
Dimensions
G Pen Roam
178x127x102mm
XMAX Starry 4
115.9 x 37.5 x 24mm
Weight
G Pen Roam
~317g
XMAX Starry 4
~137g
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 Starry 4 if...
- You want the lower listed entry price ($99 vs $200).
- You want the lighter unit for carrying and travel.
- Your usage leans toward conduction and budget sessions.
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) | $200 | $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 | ~90 minutes |
| Pass-Through Charging | — | Yes |
| Dimensions | 178x127x102mm | 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 price tier: the XMAX Starry 4 sits at $99 while the G Pen Roam is $200, a gap of about $101 that puts them in different buying brackets.
Which is cheaper, the G Pen Roam or the XMAX Starry 4?
XMAX Starry 4 is the cheaper option at $99 compared with $200 for the G Pen Roam, about $101 less. Live retailer pricing can shift, so confirm before buying.
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.
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?
XMAX Starry 4 fully charges in ~90 minutes, ahead of ~2 hours on the G Pen Roam.
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.