Price (USD)
G Pen Pro edgeG Pen Pro
$90
Transient Mist Flow Pro
$236
G Pen Pro is typically around $146 lower.
Vaporizer Comparison
G Pen Pro vs Transient Mist Flow Pro
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro
Grenco Science $90
VS
Transient Mist Flow Pro
Transient Mist $236
Editorial Summary
G Pen Pro and Transient Mist Flow Pro are both portable / electronic vaporizers, but they target different priorities. G Pen Pro is usually the lower-cost pick at $90, around $146 below Transient Mist Flow Pro. Transient Mist Flow Pro has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
26
Different Specs
25
Shared Specs
1
Overall Overlap
4%
Shared Traits
Portable Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
Transient Mist Flow Pro edgeG Pen Pro
~30 seconds
Transient Mist Flow Pro
3-6 seconds to 200°C, under 2 seconds to reheat
Transient Mist Flow Pro has the quicker listed heat-up profile.
Heating Style
No clear edgeG Pen Pro
Convection
Transient Mist Flow Pro
Hybrid
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
G Pen Pro
$90
Transient Mist Flow Pro
$236
Heating Type
G Pen Pro
Convection
Transient Mist Flow Pro
Hybrid
Heat Up Time
G Pen Pro
~30 seconds
Transient Mist Flow Pro
3-6 seconds to 200°C, under 2 seconds to reheat
Temperature Range
G Pen Pro
190°C - 220°C (375°F - 428°F)
Transient Mist Flow Pro
40-240°C (104-464°F)
Battery Type
G Pen Pro
Internal
Transient Mist Flow Pro
Removable 18650, rated 10C or higher
Battery Capacity
G Pen Pro
2200mAh
Transient Mist Flow Pro
3000mAh Molicel P30B (manual lists a 2800mAh P28A)
Charging
G Pen Pro
Micro-USB
Transient Mist Flow Pro
USB-C, 5V/2A
Power Adjustment
G Pen Pro
Modular - 3 Stages
Transient Mist Flow Pro
Digital, with an optional 5°C step mode
Chamber Material
G Pen Pro
Ceramic
Transient Mist Flow Pro
Aluminum bowl
Brand
G Pen Pro
Grenco Science
Transient Mist Flow Pro
Transient Mist
Choose G Pen Pro if...
- You want the lower listed entry price ($90 vs $236).
- You prefer a convection heating profile.
- Your usage leans toward budget and convection sessions.
Typical price
$90
No stores listed yet
Choose Transient Mist Flow Pro if...
- You care about faster heat-up time for quicker sessions.
- You prefer a hybrid heating profile.
- Your usage leans toward hybrid and battery swap sessions.
Typical price
$236
No stores listed yet
Spec Comparison Table
Direct comparison of every spec from each device profile.
25 differ 1 shared
| Specification | G Pen Pro | Transient Mist Flow Pro |
|---|---|---|
| Price (USD) | $90 | $236 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Hybrid |
| Heat Up Time | ~30 seconds | 3-6 seconds to 200°C, under 2 seconds to reheat |
| Temperature Range | 190°C - 220°C (375°F - 428°F) | 40-240°C (104-464°F) |
| Chamber Capacity | ~0.25 grams | — |
| Battery Type | Internal | Removable 18650, rated 10C or higher |
| Battery Capacity | 2200mAh | 3000mAh Molicel P30B (manual lists a 2800mAh P28A) |
| Charging | Micro-USB | USB-C, 5V/2A |
| Charge Time | <3 hours | — |
| Pass-Through Charging | — | No |
| Dimensions | — | 105 x 63 x 24mm |
| Weight | — | 230g with battery (215g in the manual) |
| Power Adjustment | Modular - 3 Stages | Digital, with an optional 5°C step mode |
| Chamber Material | Ceramic | Aluminum bowl |
| Brand | Grenco Science | Transient Mist |
| Airpath | — | CNC-machined PEEK, separate from the electronics |
| Body Material | — | PC and PEEK |
| Display Type | — | 0.96-inch colour OLED |
| Dosing Capsules | — | Yes, or loose herb |
| Haptic Feedback | — | Yes |
| Heating Element | — | 0.05mm SUS316L stainless steel foil cylinder |
| Release Date | 2017 | October 2026 |
| Session Style | Session | Session (up to 220°C, 100-500 second timer) and on-demand |
| Warranty | 1 year | 2-year limited |
| Water Pipe Adapter | — | 14mm and 18mm included |
Comparison FAQs
What is the biggest difference between the G Pen Pro and the Transient Mist Flow Pro?
The biggest practical difference is price tier: the G Pen Pro sits at $90 while the Transient Mist Flow Pro is $236, a gap of about $146 that puts them in different buying brackets.
Which is cheaper, the G Pen Pro or the Transient Mist Flow Pro?
G Pen Pro is the cheaper option at $90 compared with $236 for the Transient Mist Flow Pro, about $146 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Pro or the Transient Mist Flow Pro?
Transient Mist Flow Pro reaches session-ready temperature in 3-6 seconds to 200°C, under 2 seconds to reheat, while the G Pen Pro takes ~30 seconds. That's roughly 26 seconds quicker on the Transient Mist Flow Pro, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the G Pen Pro and the Transient Mist Flow Pro?
G Pen Pro uses convection heating, while the Transient Mist Flow Pro uses hybrid. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Can I swap the batteries on the G Pen Pro or the Transient Mist Flow Pro?
Transient Mist Flow Pro uses removable 18650, rated 10c or higher, so you can carry spares for back-to-back days. The G Pen Pro has a built-in battery you can't swap on the go.
Can I set custom temperatures on the G Pen Pro or the Transient Mist Flow Pro?
G Pen Pro controls heat with modular - 3 stages, while the Transient Mist Flow Pro uses digital, with an optional 5°c step mode. Transient Mist Flow Pro gives you finer per-degree control.
Which has a wider temperature range, the G Pen Pro or the Transient Mist Flow Pro?
Transient Mist Flow Pro covers 40-240°C (104-464°F), a wider band than the G Pen Pro at 190°C - 220°C (375°F - 428°F). 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.