Price (USD)
Close callFirefly 2+
$250
Zeus Arc GT4
$260
Pricing is very close between both devices.
Vaporizer Comparison
Firefly 2+ vs Zeus Arc GT4
Side-by-side specs, pricing context, and clear decision guidance.
Firefly 2+
Firefly Vapor $250
VS
Zeus Arc GT4
Zeus Arsenal $260
Editorial Summary
Firefly 2+ and Zeus Arc GT4 are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($250 vs $260). Firefly 2+ has the quicker listed heat-up profile, which can matter for shorter sessions.
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.
Heat-Up Time
Firefly 2+ edgeFirefly 2+
~3 seconds
Zeus Arc GT4
~35 seconds
Firefly 2+ has the quicker listed heat-up profile.
Weight
Zeus Arc GT4 edgeFirefly 2+
~140g
Zeus Arc GT4
~121 grams
Zeus Arc GT4 is the lighter listed unit.
Heating Style
Close callFirefly 2+
Convection
Zeus Arc GT4
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)
Firefly 2+
$250
Zeus Arc GT4
$260
Heating Type
Firefly 2+
Convection
Zeus Arc GT4
Conduction
Heat Up Time
Firefly 2+
~3 seconds
Zeus Arc GT4
~35 seconds
Temperature Range
Firefly 2+
93°C - 260°C
Zeus Arc GT4
195-225°C (383-437°F) herb, 235-255°C (455-491°F) wax
Chamber Capacity
Firefly 2+
~0.15g
Zeus Arc GT4
Up to ~0.4g in an ArcPod, spacer included for smaller loads
Battery Type
Firefly 2+
Removable (proprietary)
Zeus Arc GT4
Internal
Battery Capacity
Firefly 2+
770mAh
Zeus Arc GT4
3500mAh
Battery Life
Firefly 2+
<90 minutes
Zeus Arc GT4
~6-8 sessions per charge
Charging
Firefly 2+
Proprietary Dock
Zeus Arc GT4
USB-C (5V, 2.5A, 12.5W)
Charge Time
Firefly 2+
~45 minutes
Zeus Arc GT4
~90 minutes
Choose Firefly 2+ if...
- You care about faster heat-up time for quicker sessions.
- You prefer a convection heating profile.
- Your usage leans toward premium and battery swap sessions.
Typical price
$250
Sold by The Stash Shack
Choose Zeus Arc GT4 if...
- You prefer a conduction heating profile.
- Your usage leans toward conduction and concentrates sessions.
- You prefer Zeus Arc GT4's overall feature mix and form factor.
Prices are read automatically from retailer pages; 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 | Firefly 2+ | Zeus Arc GT4 |
|---|---|---|
| Price (USD) | $250 | $260 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Conduction |
| Heat Up Time | ~3 seconds | ~35 seconds |
| Temperature Range | 93°C - 260°C | 195-225°C (383-437°F) herb, 235-255°C (455-491°F) wax |
| Chamber Capacity | ~0.15g | Up to ~0.4g in an ArcPod, spacer included for smaller loads |
| Battery Type | Removable (proprietary) | Internal |
| Battery Capacity | 770mAh | 3500mAh |
| Battery Life | <90 minutes | ~6-8 sessions per charge |
| Charging | Proprietary Dock | USB-C (5V, 2.5A, 12.5W) |
| Charge Time | ~45 minutes | ~90 minutes |
| Pass-Through Charging | No | — |
| Dimensions | 129x36x24mm | 86.5 x 42.5 x 22.5mm |
| Weight | ~140g | ~121 grams |
| Power Adjustment | Digital (precise) | Presets (6 herb levels, 3 wax levels) |
| Chamber Material | Glass | 24K gold coated |
| Concentrate Support | — | Yes, via the WaxPod and a dedicated wax mode |
| Brand | Firefly Vapor | Zeus Arsenal |
| Adjustable Airflow | — | Yes (Flow Sink in for a restricted draw, out for a free draw) |
| Chamber Type | Ceramic | — |
| Display Type | — | 3 LED status interface |
| Haptic Feedback | — | Yes |
| Manufacturer | — | Thermodyne Systems |
| Release Date | 2019 | 2025 |
| Session Style | On-Demand | Session (6 minute herb cycle, ~2 minute wax cycle) |
| Warranty | 2 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 Firefly 2+ and the Zeus Arc GT4?
The biggest practical difference is heating approach: Firefly 2+ runs convection while Zeus Arc GT4 runs conduction. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
Which heats up faster, the Firefly 2+ or the Zeus Arc GT4?
Firefly 2+ reaches session-ready temperature in ~3 seconds, while the Zeus Arc GT4 takes ~35 seconds. That's roughly 32 seconds quicker on the Firefly 2+, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the Firefly 2+ and the Zeus Arc GT4?
Firefly 2+ uses convection heating, while the Zeus Arc GT4 uses conduction. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Does the Firefly 2+ or the Zeus Arc GT4 hold more flower?
Zeus Arc GT4 has the larger chamber at Up to ~0.4g in an ArcPod, spacer included for smaller loads, versus ~0.15g on the Firefly 2+. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Which is lighter, the Firefly 2+ or the Zeus Arc GT4?
Zeus Arc GT4 is the lighter unit at ~121 grams, around 19g less than the Firefly 2+ at ~140g. The lighter device is easier to carry and pocket day-to-day.
Which is cheaper, the Firefly 2+ or the Zeus Arc GT4?
Listed prices are close: $250 for the Firefly 2+ versus $260 for the Zeus Arc GT4. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the Firefly 2+ or the Zeus Arc GT4?
Firefly 2+ uses removable (proprietary), so you can carry spares for back-to-back days. The Zeus Arc GT4 has a built-in battery you can't swap on the go.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.