Price (USD)
Close callAUXO Celsius
$250
Firefly 2+
$250
Pricing is very close between both devices.
Vaporizer Comparison
AUXO Celsius vs Firefly 2+
Side-by-side specs, pricing context, and clear decision guidance.
AUXO Celsius
AUXO $250
VS
Firefly 2+
Firefly Vapor $250
Editorial Summary
AUXO Celsius and Firefly 2+ are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($250 vs $250). Firefly 2+ has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
27
Different Specs
24
Shared Specs
3
Overall Overlap
11%
Shared Traits
Portable Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
Firefly 2+ edgeAUXO Celsius
6-30 seconds
Firefly 2+
~3 seconds
Firefly 2+ has the quicker listed heat-up profile.
Weight
Firefly 2+ edgeAUXO Celsius
157.8g
Firefly 2+
~140g
Firefly 2+ is the lighter listed unit.
Heating Style
Close callAUXO Celsius
Hybrid (Primarily Conduction)
Firefly 2+
Convection
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Heating Type
AUXO Celsius
Hybrid (Primarily Conduction)
Firefly 2+
Convection
Heat Up Time
AUXO Celsius
6-30 seconds
Firefly 2+
~3 seconds
Temperature Range
AUXO Celsius
284°F - 500°F (140°C - 260°C)
Firefly 2+
93°C - 260°C
Chamber Capacity
AUXO Celsius
0.3g dry herbs or 0.05g when using concentrates
Firefly 2+
~0.15g
Battery Type
AUXO Celsius
Lithium-ion
Firefly 2+
Removable (proprietary)
Battery Capacity
AUXO Celsius
1000mAh
Firefly 2+
770mAh
Battery Life
AUXO Celsius
~9 sessions
Firefly 2+
<90 minutes
Charging
AUXO Celsius
USB-C
Firefly 2+
Proprietary Dock
Charge Time
AUXO Celsius
1.5 hours
Firefly 2+
~45 minutes
Dimensions
AUXO Celsius
114.1x45.1x33.3mm
Firefly 2+
129x36x24mm
Choose AUXO Celsius if...
- You prefer a hybrid (primarily conduction) heating profile.
- Your usage leans toward conduction and hybrid sessions.
- You prefer AUXO Celsius's overall feature mix and form factor.
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.
Spec Comparison Table
Direct comparison of every spec from each device profile.
24 differ 3 shared
| Specification | AUXO Celsius | Firefly 2+ |
|---|---|---|
| Price (USD) | $250 | $250 |
| Device Type | Portable | Portable |
| Heating Type | Hybrid (Primarily Conduction) | Convection |
| Heat Up Time | 6-30 seconds | ~3 seconds |
| Temperature Range | 284°F - 500°F (140°C - 260°C) | 93°C - 260°C |
| Chamber Capacity | 0.3g dry herbs or 0.05g when using concentrates | ~0.15g |
| Battery Type | Lithium-ion | Removable (proprietary) |
| Battery Capacity | 1000mAh | 770mAh |
| Battery Life | ~9 sessions | <90 minutes |
| Charging | USB-C | Proprietary Dock |
| Charge Time | 1.5 hours | ~45 minutes |
| Pass-Through Charging | — | No |
| Bluetooth / App | Yes | — |
| Dimensions | 114.1x45.1x33.3mm | 129x36x24mm |
| Weight | 157.8g | ~140g |
| Power Adjustment | Modular - 4 Stages (and an app controlled custom mode) | Digital (precise) |
| Chamber Material | Quartz | Glass |
| Concentrate Support | Yes | — |
| Brand | AUXO | Firefly Vapor |
| Body Material | Aluminum Alloy | — |
| Chamber Type | — | Ceramic |
| Country of Manufacture | China | — |
| Haptic Feedback | Yes | — |
| Mouthpiece Material | Zirconia | — |
| Release Date | 2023 | 2019 |
| Session Style | Session | On-Demand |
| Warranty | 2 years | 2 years |
Comparison FAQs
What is the biggest difference between the AUXO Celsius and the Firefly 2+?
The biggest practical difference is heating approach: AUXO Celsius runs hybrid (primarily conduction) while Firefly 2+ runs convection. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
Which heats up faster, the AUXO Celsius or the Firefly 2+?
Firefly 2+ reaches session-ready temperature in ~3 seconds, while the AUXO Celsius takes 6-30 seconds. That's roughly 15 seconds quicker on the Firefly 2+, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the AUXO Celsius and the Firefly 2+?
AUXO Celsius uses hybrid (primarily conduction) heating, while the Firefly 2+ uses convection. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Which is lighter, the AUXO Celsius or the Firefly 2+?
Firefly 2+ is the lighter unit at ~140g, around 18g less than the AUXO Celsius at 157.8g. The lighter device is easier to carry and pocket day-to-day.
Which is cheaper, the AUXO Celsius or the Firefly 2+?
Listed prices are close: $250 for the AUXO Celsius versus $250 for the Firefly 2+. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the AUXO Celsius or the Firefly 2+?
Firefly 2+ uses removable (proprietary), so you can carry spares for back-to-back days. The AUXO Celsius has a built-in battery you can't swap on the go.
How much flower do the AUXO Celsius and Firefly 2+ hold?
AUXO Celsius lists a chamber capacity of 0.3g dry herbs or 0.05g when using concentrates; the Firefly 2+ lists ~0.15g.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.