Price (USD)
Close callBoundless Tera V3
$155
G Pen Hyer
$150
Pricing is very close between both devices.
Vaporizer Comparison
Boundless Tera V3 vs G Pen Hyer
Side-by-side specs, pricing context, and clear decision guidance.
Boundless Tera V3
Boundless Technology $155
VS
G Pen Hyer
Grenco Science from $249.99
Editorial Summary
Boundless Tera V3 and G Pen Hyer are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($155 vs $150). Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
23
Different Specs
20
Shared Specs
3
Overall Overlap
13%
Shared Traits
Portable Electronic Concentrates
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heating Style
Close callBoundless Tera V3
Convection
G Pen Hyer
Conduction
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
Boundless Tera V3
$155
G Pen Hyer
$150
Heating Type
Boundless Tera V3
Convection
G Pen Hyer
Conduction
Temperature Range
Boundless Tera V3
40°C-220°C (260°C concentrate mode)
G Pen Hyer
180°C - 220°C dry herb, 250°C - 450°C concentrate
Chamber Capacity
Boundless Tera V3
0.6g
G Pen Hyer
~0.5g
Battery Type
Boundless Tera V3
Dual 18650
G Pen Hyer
External Battery Pack
Battery Capacity
Boundless Tera V3
5000mAh
G Pen Hyer
6000mAh
Charging
Boundless Tera V3
Micro-USB
G Pen Hyer
USB-C
Charge Time
Boundless Tera V3
~2.5 hours
G Pen Hyer
2.5 - 3 hours
Power Adjustment
Boundless Tera V3
Digital
G Pen Hyer
Digital Control - 5 Stage Modular
Chamber Material
Boundless Tera V3
Stainless Steel
G Pen Hyer
Ceramic (dry herb tank), Quartz (concentrate tank)
Choose Boundless Tera V3 if...
- You prefer a convection heating profile.
- Your usage leans toward battery swap and convection sessions.
- You prefer Boundless Tera V3's overall feature mix and form factor.
Typical price
$155
Sold by The Stash Shack
Choose G Pen Hyer if...
- You prefer a conduction heating profile.
- Your usage leans toward conduction and premium sessions.
- You prefer G Pen Hyer's overall feature mix and form factor.
Current price
$249.99
at Slick Vapes
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.
20 differ 3 shared
| Specification | Boundless Tera V3 | G Pen Hyer |
|---|---|---|
| Price (USD) | $155 | $150 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Conduction |
| Heat Up Time | 20 - 30 Seconds | — |
| Temperature Range | 40°C-220°C (260°C concentrate mode) | 180°C - 220°C dry herb, 250°C - 450°C concentrate |
| Chamber Capacity | 0.6g | ~0.5g |
| Battery Type | Dual 18650 | External Battery Pack |
| Battery Capacity | 5000mAh | 6000mAh |
| Charging | Micro-USB | USB-C |
| Charge Time | ~2.5 hours | 2.5 - 3 hours |
| Dimensions | 120x40x25mm | — |
| Weight | 279g | — |
| Power Adjustment | Digital | Digital Control - 5 Stage Modular |
| Chamber Material | Stainless Steel | Ceramic (dry herb tank), Quartz (concentrate tank) |
| Concentrate Support | Yes | Yes |
| Brand | Boundless Technology | Grenco Science |
| Country of Manufacture | China | — |
| Display Type | — | LED Light User Interface |
| Haptic Feedback | — | No |
| Heating Element | — | Stainless Steel |
| Release Date | 2018 | 2022 |
| Session Style | Session | Session |
| Warranty | 3 years | — |
Comparison FAQs
What is the biggest difference between the Boundless Tera V3 and the G Pen Hyer?
The biggest practical difference is heating approach: Boundless Tera V3 runs convection while G Pen Hyer runs conduction. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
What's the difference in heating between the Boundless Tera V3 and the G Pen Hyer?
Boundless Tera V3 uses convection heating, while the G Pen Hyer uses conduction. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Does the Boundless Tera V3 or the G Pen Hyer hold more flower?
Boundless Tera V3 has the larger chamber at 0.6g, versus ~0.5g on the G Pen Hyer. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Which is cheaper, the Boundless Tera V3 or the G Pen Hyer?
Listed prices are close: $155 for the Boundless Tera V3 versus $150 for the G Pen Hyer. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the Boundless Tera V3 or the G Pen Hyer?
Boundless Tera V3 uses dual 18650, 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 charges faster, the Boundless Tera V3 or the G Pen Hyer?
Boundless Tera V3 fully charges in ~2.5 hours, ahead of 2.5 - 3 hours on the G Pen Hyer.
Which has a wider temperature range, the Boundless Tera V3 or the G Pen Hyer?
G Pen Hyer covers 180°C - 220°C dry herb, 250°C - 450°C concentrate, a wider band than the Boundless Tera V3 at 40°C-220°C (260°C concentrate mode). 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?
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