Price (USD)
G Pen Hyer edgeG Pen Hyer
$150
Transient Mist Flow Pro
$236
G Pen Hyer is typically around $86 lower.
Vaporizer Comparison
G Pen Hyer vs Transient Mist Flow Pro
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Hyer
Grenco Science from $249.99
VS
Transient Mist Flow Pro
Transient Mist $236
Editorial Summary
G Pen Hyer and Transient Mist Flow Pro are both portable / electronic vaporizers, but they target different priorities. G Pen Hyer is usually the lower-cost pick at $150, around $86 below Transient Mist Flow Pro. Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
27
Different Specs
26
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.
Heating Style
Close callG Pen Hyer
Conduction
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 Hyer
$150
Transient Mist Flow Pro
$236
Heating Type
G Pen Hyer
Conduction
Transient Mist Flow Pro
Hybrid
Temperature Range
G Pen Hyer
180°C - 220°C dry herb, 250°C - 450°C concentrate
Transient Mist Flow Pro
40-240°C (104-464°F)
Battery Type
G Pen Hyer
External Battery Pack
Transient Mist Flow Pro
Removable 18650, rated 10C or higher
Battery Capacity
G Pen Hyer
6000mAh
Transient Mist Flow Pro
3000mAh Molicel P30B (manual lists a 2800mAh P28A)
Charging
G Pen Hyer
USB-C
Transient Mist Flow Pro
USB-C, 5V/2A
Power Adjustment
G Pen Hyer
Digital Control - 5 Stage Modular
Transient Mist Flow Pro
Digital, with an optional 5°C step mode
Chamber Material
G Pen Hyer
Ceramic (dry herb tank), Quartz (concentrate tank)
Transient Mist Flow Pro
Aluminum bowl
Brand
G Pen Hyer
Grenco Science
Transient Mist Flow Pro
Transient Mist
Display Type
G Pen Hyer
LED Light User Interface
Transient Mist Flow Pro
0.96-inch colour OLED
Choose G Pen Hyer if...
- You want the lower listed entry price ($150 vs $236).
- You prefer a conduction heating profile.
- Your usage leans toward conduction and concentrates sessions.
Current price
$249.99
at Slick Vapes
Choose Transient Mist Flow Pro if...
- You prefer a hybrid heating profile.
- Your usage leans toward hybrid and battery swap sessions.
- You prefer Transient Mist Flow Pro's overall feature mix and form factor.
Typical price
$236
Sold by Transient Mist
Prices are read automatically from retailer pages and were last checked Oct 2, 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.
26 differ 1 shared
| Specification | G Pen Hyer | Transient Mist Flow Pro |
|---|---|---|
| Price (USD) | $150 | $236 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Hybrid |
| Heat Up Time | — | 3-6 seconds to 200°C, under 2 seconds to reheat |
| Temperature Range | 180°C - 220°C dry herb, 250°C - 450°C concentrate | 40-240°C (104-464°F) |
| Chamber Capacity | ~0.5g | — |
| Battery Type | External Battery Pack | Removable 18650, rated 10C or higher |
| Battery Capacity | 6000mAh | 3000mAh Molicel P30B (manual lists a 2800mAh P28A) |
| Charging | USB-C | USB-C, 5V/2A |
| Charge Time | 2.5 - 3 hours | — |
| Pass-Through Charging | — | No |
| Dimensions | — | 105 x 63 x 24mm |
| Weight | — | 230g with battery (215g in the manual) |
| Power Adjustment | Digital Control - 5 Stage Modular | Digital, with an optional 5°C step mode |
| Chamber Material | Ceramic (dry herb tank), Quartz (concentrate tank) | Aluminum bowl |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | Transient Mist |
| Airpath | — | CNC-machined PEEK, separate from the electronics |
| Body Material | — | PC and PEEK |
| Display Type | LED Light User Interface | 0.96-inch colour OLED |
| Dosing Capsules | — | Yes, or loose herb |
| Haptic Feedback | No | Yes |
| Heating Element | Stainless Steel | 0.05mm SUS316L stainless steel foil cylinder |
| Release Date | 2022 | October 2026 |
| Session Style | Session | Session (up to 220°C, 100-500 second timer) and on-demand |
| Warranty | — | 2-year limited |
| Water Pipe Adapter | — | 14mm and 18mm included |
Comparison FAQs
What is the biggest difference between the G Pen Hyer and the Transient Mist Flow Pro?
The biggest practical difference is heating approach: G Pen Hyer runs conduction while Transient Mist Flow Pro runs hybrid. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
Which is cheaper, the G Pen Hyer or the Transient Mist Flow Pro?
G Pen Hyer is the cheaper option at $150 compared with $236 for the Transient Mist Flow Pro, about $86 less. Live retailer pricing can shift, so confirm before buying.
What's the difference in heating between the G Pen Hyer and the Transient Mist Flow Pro?
G Pen Hyer uses conduction 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 Hyer 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 Hyer has a built-in battery you can't swap on the go.
Which has a wider temperature range, the G Pen Hyer or the Transient Mist Flow Pro?
G Pen Hyer covers 180°C - 220°C dry herb, 250°C - 450°C concentrate, a wider band than the Transient Mist Flow Pro at 40-240°C (104-464°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.