Price (USD)
Close callG Pen Pro
$90
XMAX Starry 4
$99
Pricing is very close between both devices.
Vaporizer Comparison
G Pen Pro
XMAX Starry 4
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro and XMAX Starry 4 are both portable / budget vaporizers, but they target different priorities. Their listed prices are close ($90 vs $99). XMAX Starry 4 has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
18
Different Specs
17
Shared Specs
1
Overall Overlap
6%
Shared Traits
A quick snapshot of the specs people usually care about first.
G Pen Pro
$90
XMAX Starry 4
$99
Pricing is very close between both devices.
G Pen Pro
~30 seconds
XMAX Starry 4
~15 seconds
XMAX Starry 4 has the quicker listed heat-up profile.
G Pen Pro
Convection
XMAX Starry 4
Conduction
Heating style differs, which can impact flavor and extraction behavior.
Top specs where these two devices diverge.
Price (USD)
G Pen Pro
$90
XMAX Starry 4
$99
Heating Type
G Pen Pro
Convection
XMAX Starry 4
Conduction
Heat Up Time
G Pen Pro
~30 seconds
XMAX Starry 4
~15 seconds
Temperature Range
G Pen Pro
190°C - 220°C (375°F - 428°F)
XMAX Starry 4
100℃-240℃ (212℉-464℉)
Chamber Capacity
G Pen Pro
~0.25 grams
XMAX Starry 4
—
Battery Type
G Pen Pro
—
XMAX Starry 4
18650
Battery Capacity
G Pen Pro
2200mAh
XMAX Starry 4
2550mAh
Charging
G Pen Pro
Micro-USB
XMAX Starry 4
USB-C
Charge Time
G Pen Pro
<3 hours
XMAX Starry 4
—
Pass-Through Charging
G Pen Pro
—
XMAX Starry 4
Yes
Direct comparison of every spec from each device profile.
| Specification | G Pen Pro | XMAX Starry 4 |
|---|---|---|
| Price (USD) | $90 | $99 |
| Heating Type | Convection | Conduction |
| Heat Up Time | ~30 seconds | ~15 seconds |
| Temperature Range | 190°C - 220°C (375°F - 428°F) | 100℃-240℃ (212℉-464℉) |
| Chamber Capacity | ~0.25 grams | — |
| Battery Type | — | 18650 |
| Battery Capacity | 2200mAh | 2550mAh |
| Charging | Micro-USB | USB-C |
| Charge Time | <3 hours | — |
| Pass-Through Charging | — | Yes |
| Dimensions | — | 115.9 x 37.5 x 24mm |
| Power Adjustment | Modular - 3 Stages | — |
| Brand | Grenco Science | — |
| Chamber Material | Ceramic | Ceramic |
| Display Type | — | OLED |
| Haptic Feedback | — | Yes |
| Manufacturer | — | TopGreen Technology Co |
| Replaceable Battery | — | Yes |
The biggest practical difference is heating approach: G Pen Pro runs convection while XMAX Starry 4 runs conduction. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
XMAX Starry 4 reaches session-ready temperature in ~15 seconds, while the G Pen Pro takes ~30 seconds. That's roughly 15 seconds quicker on the XMAX Starry 4, which is useful if you want shorter, on-demand sessions.
G Pen Pro uses convection heating, while the XMAX Starry 4 uses conduction. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Yes, only the XMAX Starry 4 supports pass-through charging. The G Pen Pro has to finish charging before you can use it.
Listed prices are close: $90 for the G Pen Pro versus $99 for the XMAX Starry 4. Day-to-day price will likely come down to whichever retailer is running a promotion.
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 Pro is more conspicuous in hand and harder to keep out of sight.
XMAX Starry 4 charges over USB-C; the G Pen Pro uses a Micro-USB port. USB-C means one fewer cable to keep around if your phone and laptop already use it.
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.