Price (USD)
Boundless Terp Pen XL edgeBoundless Terp Pen XL
$55
Zeus Arc GT4
$260
Boundless Terp Pen XL is typically around $205 lower.
Vaporizer Comparison
Boundless Terp Pen XL vs Zeus Arc GT4
Side-by-side specs, pricing context, and clear decision guidance.
Boundless Terp Pen XL
Boundless Technology from $59
VS
Zeus Arc GT4
Zeus Arsenal $260
Editorial Summary
Boundless Terp Pen XL and Zeus Arc GT4 are both portable / concentrates vaporizers, but they target different priorities. Boundless Terp Pen XL is usually the lower-cost pick at $55, around $205 below Zeus Arc GT4. Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
26
Different Specs
23
Shared Specs
3
Overall Overlap
12%
Shared Traits
Portable Concentrates Discrete Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heating Style
Close callBoundless Terp Pen XL
Conduction
Zeus Arc GT4
Conduction
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
Boundless Terp Pen XL
$55
Zeus Arc GT4
$260
Temperature Range
Boundless Terp Pen XL
698°F - 779°F (370°C - 415°C)
Zeus Arc GT4
195-225°C (383-437°F) herb, 235-255°C (455-491°F) wax
Battery Capacity
Boundless Terp Pen XL
320mAh
Zeus Arc GT4
3500mAh
Charging
Boundless Terp Pen XL
Micro USB
Zeus Arc GT4
USB-C (5V, 2.5A, 12.5W)
Charge Time
Boundless Terp Pen XL
~45 minutes
Zeus Arc GT4
~90 minutes
Dimensions
Boundless Terp Pen XL
16x149x16mm
Zeus Arc GT4
86.5 x 42.5 x 22.5mm
Power Adjustment
Boundless Terp Pen XL
Modular - 3 stage
Zeus Arc GT4
Presets (6 herb levels, 3 wax levels)
Chamber Material
Boundless Terp Pen XL
Ceramic
Zeus Arc GT4
24K gold coated
Concentrate Support
Boundless Terp Pen XL
Yes
Zeus Arc GT4
Yes, via the WaxPod and a dedicated wax mode
Brand
Boundless Terp Pen XL
Boundless Technology
Zeus Arc GT4
Zeus Arsenal
Choose Boundless Terp Pen XL if...
- You want the lower listed entry price ($55 vs $260).
- Your usage leans toward pen sessions.
- You prefer Boundless Terp Pen XL's overall feature mix and form factor.
Current price
$59
at Slick Vapes
Choose Zeus Arc GT4 if...
- Your usage leans toward conduction sessions.
- You prefer Zeus Arc GT4's overall feature mix and form factor.
- You value how the Zeus Arc GT4 balances size, controls, and everyday practicality.
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.
23 differ 3 shared
| Specification | Boundless Terp Pen XL | Zeus Arc GT4 |
|---|---|---|
| Price (USD) | $55 | $260 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | — | ~35 seconds |
| Temperature Range | 698°F - 779°F (370°C - 415°C) | 195-225°C (383-437°F) herb, 235-255°C (455-491°F) wax |
| Chamber Capacity | — | Up to ~0.4g in an ArcPod, spacer included for smaller loads |
| Battery Type | Internal | Internal |
| Battery Capacity | 320mAh | 3500mAh |
| Battery Life | — | ~6-8 sessions per charge |
| Charging | Micro USB | USB-C (5V, 2.5A, 12.5W) |
| Charge Time | ~45 minutes | ~90 minutes |
| Dimensions | 16x149x16mm | 86.5 x 42.5 x 22.5mm |
| Weight | — | ~121 grams |
| Power Adjustment | Modular - 3 stage | Presets (6 herb levels, 3 wax levels) |
| Chamber Material | Ceramic | 24K gold coated |
| Concentrate Support | Yes | Yes, via the WaxPod and a dedicated wax mode |
| Brand | Boundless Technology | Zeus Arsenal |
| Adjustable Airflow | No | Yes (Flow Sink in for a restricted draw, out for a free draw) |
| Country of Manufacture | China | — |
| Display Type | — | 3 LED status interface |
| Haptic Feedback | — | Yes |
| Manufacturer | — | Thermodyne Systems |
| Release Date | 2020 | 2025 |
| Session Style | On-Demand | Session (6 minute herb cycle, ~2 minute wax cycle) |
| Warranty | 3 years | 2 years, extendable to 3 with registration (battery 3 months) |
| Water Pipe Adapter | — | Included, fits 14mm and 18mm glass |
Comparison FAQs
What is the biggest difference between the Boundless Terp Pen XL and the Zeus Arc GT4?
The biggest practical difference is price tier: the Boundless Terp Pen XL sits at $55 while the Zeus Arc GT4 is $260, a gap of about $205 that puts them in different buying brackets.
Which is cheaper, the Boundless Terp Pen XL or the Zeus Arc GT4?
Boundless Terp Pen XL is the cheaper option at $55 compared with $260 for the Zeus Arc GT4, about $205 less. Live retailer pricing can shift, so confirm before buying.
Which charges faster, the Boundless Terp Pen XL or the Zeus Arc GT4?
Boundless Terp Pen XL fully charges in ~45 minutes, ahead of ~90 minutes on the Zeus Arc GT4.
Can I use the Boundless Terp Pen XL or the Zeus Arc GT4 with a water pipe?
Only the Zeus Arc GT4 has a documented water-pipe adapter option. The Boundless Terp Pen XL doesn't list one, though aftermarket adapters sometimes exist for popular models.
Can I use concentrates with the Boundless Terp Pen XL or the Zeus Arc GT4?
Both devices support concentrate use, typically via an included or aftermarket pad or insert. Check the manual for the recommended approach for each.
Which uses USB-C, the Boundless Terp Pen XL or the Zeus Arc GT4?
Zeus Arc GT4 charges over USB-C; the Boundless Terp Pen XL uses a Micro USB port. USB-C means one fewer cable to keep around if your phone and laptop already use it.
How similar are the Boundless Terp Pen XL and the Zeus Arc GT4?
Across the 26 specs we line up, they share 3 and differ on 23, an overlap of about 12%. The differences are concentrated in the areas the spec table highlights with a marker.
Need a different matchup?
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