We purchased and tested the Firefly 2+ hands-on. Prices, availability, and performance data are regularly verified.
VapeExperts Review of the Firefly 2+
The Firefly 2+ delivers top-tier flavor from its pure convection heater and all-glass borosilicate vapor path. For terpene clarity, few portables on our portable vaporizer rankings come close.
Everything else about this vaporizer is a compromise. A 770 mAh battery, steep learning curve, mandatory oven stirring, and app-dependent temperature control make the Firefly 2+ one of the hardest portables to recommend in 2026.
Released in 2018 by a company that quietly shut down in 2024, the 2+ still appears at discount prices and on the used market. If you're deciding whether the flavor justifies the learning curve, this is the honest breakdown.
What's in the Box
The Firefly 2+ ships with the vaporizer, two proprietary lithium-ion batteries, a charging dock, and a concentrate pad for wax and rosin use.
Magnesium alloy body weighs just 150 g
The Firefly 2+ pairs a magnesium alloy shell with borosilicate glass for the oven, mouthpiece, and entire vapor path. At 150 g and 127 x 51 x 25 mm, it slips into a jacket pocket with less bulk than most portables at this price point.
The all-glass interior is what sets this vaporizer apart. Pop off the magnetic lid and you're looking into a borosilicate oven where vapor never contacts metal or plastic from herb to lip. Our convection vs conduction heating guide explains why vapor path material matters so much for flavor.
That magnetic lid divides opinion. It detaches cleanly for loading and cleaning, but the silicone gasket around the rim can degrade after months of regular isopropyl alcohol use. Firefly sells replacement lids, though availability varies.
Two capacitive touch sensors sit on either side of the body, activating the heater when you grip the vaporizer naturally. The catch: they read skin contact, not pressure. Gloves, dry fingers, or cold hands can all prevent activation, making winter outdoor use a non-starter.
Whether you own the Firefly 2+ or are still deciding — your thoughts and questions are welcome here.
Reviewed by
The VapeExperts Editorial Team
Every vaporizer we cover is bought, lived with, and tested by the same small team. We log temperatures with an external thermocouple, run battery cycles to depletion, and spend at least two weeks on a device before we score it. No manufacturer has ever paid for, previewed, or influenced a review on this site.
Top-tier terpene flavor from a 3-second convection heater
The Firefly 2+ reaches target temperature in 3 seconds. That near-instant heat-up defines its on-demand vaporizer design: take a hit, release the touch sensors, and the oven stops heating immediately. No cannabis wasted between draws.
Temperature ranges from 149°C to 232°C with 1°C precision through the companion app. Without the app, you're limited to preset profiles. Our temperature guide covers optimal ranges for different effects.
At lower temperatures around 165-180°C, the Firefly 2+ earns its reputation. Delicate terpene notes come through with clarity that most portables cannot replicate. The combination of pure convection and glass-only vapor contact preserves aromatic compounds that direct-contact heating methods partially degrade.
Above 200°C, vapor density increases but the 0.15 g oven limits cloud production. Portables with 0.3 g chambers produce visibly thicker draws at high temperatures. The Firefly 2+ is built for flavor sipping, not cloud chasing.
Draw resistance is moderate to tight, with no adjustable airflow to customize the pull. A slow, steady 10-15 second inhale produces the best results. Fast draws move cool air past the cannabis without full extraction, which explains the majority of new-user complaints about thin vapor.
The Firefly 2+ also handles concentrates via the included pad. Place wax or rosin on the pad, raise temperature above 200°C, and draw slowly. It works adequately for an herb-first vaporizer but falls short of a dedicated concentrate setup.
Battery lasts 6 sessions on a good day
The 770 mAh proprietary battery is rated for 6 sessions per charge. In our testing, that number holds indoors at moderate temperatures. Cold weather drops it sharply, with community reports of batteries dying after a single outdoor session in winter.
Charging takes 45 minutes on the included proprietary dock. There is no USB-C port, no pass-through charging, and no way to charge a battery outside the vaporizer.
The 2+ ships with two batteries, but swapping requires powering down, removing the lid, pulling the cell, inserting the fresh one, and restarting. The proprietary form factor means you cannot use standard 18650 cells, and if Firefly discontinues the battery or runs into stock issues, your vaporizer becomes unusable. Most portables at this price deliver 8-12 sessions with USB-C charging, making the battery this vaporizer's most dated component.
Loading technique makes or breaks each session
The Firefly 2+ demands a medium-coarse grind packed lightly to the oven rim. Too fine and airflow chokes. Too tight and the center cooks while edges stay green. Our grinding guide for convection vaporizers walks through the right technique.
You must stir the oven every 3-4 draws. Without stirring, extraction is visibly uneven, with browned centers and green edges. Firefly does not include a stirring tool, so keep a toothpick or small poker close by.
Cleaning is the one bright spot for usability. The glass oven wipes clean with isopropyl alcohol and a cotton swab, and the mouthpiece lifts out for soaking. Clean every 3-5 sessions to maintain the flavor purity that justifies this vaporizer's existence.
The learning curve is the steepest we've encountered among portables at this price. Expect 5-10 sessions before draw speed, pack density, grind consistency, and stirring rhythm produce reliable results. Our guide to using a vaporizer covers general technique, but the Firefly 2+ demands device-specific practice on top of that. Users who invest that time tend to describe it as one of the most rewarding flavor experiences in portable vaping. Those who don't invest it tend to shelve the device.
Bluetooth app unlocks full temperature control
The Firefly 2+ connects via Bluetooth to a companion smartphone app. The app provides single-degree temperature control, custom profiles, and a dynamic heating mode that adjusts output based on your draw speed.
The biggest problem is availability. Apple and Google have periodically removed vaporizer apps from their stores, and with Firefly no longer operating as a company, there is no guarantee the app will remain downloadable or functional long-term. Without the app, you lose the fine-grained control that separates this vaporizer from simpler on-demand portables.
When available, the app works reliably. The dynamic mode is genuinely useful, adjusting heat output in real time to maintain consistent vapor temperature across draws of varying speed and length.
How It Compares
The Firefly 2+ competes against other on-demand convection portables. Here is how it measures up against 2 alternatives buyers commonly cross-shop.
Firefly 2+ vs Tinymight 2
The Tinymight 28.8 targets the same on-demand convection audience with a replaceable 18650 battery, both on-demand and session modes, and a less finicky draw technique. It costs more but delivers stronger vapor density and unlimited runtime with spare 18650 cells. For on-demand convection without the steep learning curve, the Tinymight 2 is where VapeExperts points most buyers.
Firefly 2+ vs PAX 3
The PAX 37.0 takes the opposite approach: conduction heating in a session vaporizer format at 93 g with a 10-year warranty. Its conduction oven cannot match the Firefly 2+'s flavor clarity. If pure terpene taste matters most, the Firefly 2+ wins that head-to-head. If usability and long-term support matter more, the PAX 3 is the safer choice.
Who Should Buy the Firefly 2+
Flavor-obsessed solo users who prioritize terpene clarity above all else and enjoy the ritual of perfecting their draw technique.
Micro-dosers taking 1-2 hits at a time who benefit from on-demand heating that conserves cannabis between draws.
Collectors who already own a daily driver and want a specialized flavor tool for relaxed evening sessions at home.
Final Verdict
The Firefly 2+ produces some of the cleanest-tasting vapor in portable vaping. When grind, pack, draw speed, and temperature all click, the all-glass convection path delivers terpene clarity that justifies every bit of the ritual.
That ritual demands patience most buyers won't have. The learning curve, weak battery, app dependency, and mandatory stirring make this a niche flavor tool, not an everyday carry. Most buyers shopping in 2026 will find better overall value in newer on-demand portables like the Tinymight 2.
