The most important points at a glance
- Pure convection vaporizer with a glass vapor path for less than 100 €, available from retailers 32 from 83 €
- Replaceable 18650 battery (2550 mAh), USB-C pass-through charging, 3 adjustable airflow levels
- 11 seconds heat-up time with session (4/6 min.
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The battery lasts 4 to 7 sessions on a single charge. The 18650 cell with a capacity of 2550 mAh provides 4 to 7 full sessions depending on temperature and draw speed. At lower temperatures (170°C), it manages 6 to 7 sessions. At the maximum temperature (220°C), more like 4. For a pure convection device, that is solid, because it needs more energy per draw than conduction heating.
This is where the V4 Pro stands out in its class. The battery can be removed. Spare 18650s cost 5–10 € and fit into any pocket. Swapping takes 10 seconds. For festivals, hikes, camping or long evenings, a potential weakness turns into a real advantage.
How many competitors under 150 € offer replaceable batteries? Very few. The Arizer Air range does, and that is basically where the list ends. Most cheaper portable models have sealed batteries that degrade after 300–500 charging cycles and eventually render the device unusable. The V4 Pro avoids that problem entirely.
USB-C pass-through charging allows vaping while charging. However, it generates more heat, so it is better used only as a temporary solution. The charging port is on the side instead of the bottom, so the vaporizer can stand upright.
The V4 Pro is compact and very usable every day. At 107 g (body only) and 15.8 cm tall, the V4 Pro is compact for a convection vaporizer with a glass stem. It fits into a jacket pocket and a backpack without any problem. Tight jeans? Probably not, as the glass stem makes the device longer and more fragile. Many users therefore use a case or silicone sleeve for transport.
The colour OLED display is sharp, shows the current and target temperature plus battery status, and rotates automatically depending on orientation. A pleasant detail that you do not find on most cheap devices.
The controls are simple. Five clicks to switch on, then click to adjust the temperature in 1°C increments. No app, no Bluetooth, no account. Some people miss app control for presets; others appreciate a device that simply works the moment you pick it up.
The V4 Pro offers two operating modes:
The ceramic chamber holds about 0.1–0.15 g of ground herb. For convection, a medium-fine grind works best. Do not pack it too tightly; air needs to flow through the material. You will get the best results with a loose to medium-tight fill and a fine grind. Too tight and the airflow suffers; too loose and the extraction will be uneven.
The included dosing capsule keeps the chamber clean and makes filling easier on the go. Spare capsules cost roughly 10–15 € per pack. Anyone using the V4 Pro daily will save a significant amount of cleaning time with capsules.
Soak the glass mouthpiece in isopropanol (90%+ concentration), brush out the ceramic chamber with the included brush, and that is it. After each session, it takes about two minutes. A thorough ISO bath every 2–3 weeks keeps the glass crystal clear and the flavour neutral.
Check the screen regularly and replace it as soon as the draw resistance noticeably increases. XMAX includes four spare screens. Additional screens cost almost nothing online. The glass stem can go in the dishwasher once you remove the silicone seal.
Yes, and it is one of the V4 Pro’s best features. The glass mouthpiece also serves as a native 14mm connection for a water filter. No extra parts are needed and there is no need to buy an adaptor. Just remove the mouthpiece and insert the exposed glass tube into any bong or bubbler with a 14mm ground joint.
Through water, the V4 Pro delivers noticeably cooler and smoother draws. The convection vapor, already so clean thanks to the glass path, becomes silky smooth with water filtration. Ideal for longer sessions, extraction at high temperatures or anyone with more sensitive airways.
The Reddit community r/vaporents (350,000+ members) regularly recommends the V4 Pro + bubbler combination as the best water-filter setup under 100 €. A compact bubbler for 15–30 € changes the whole experience considerably. If you already have a 14mm piece, you can use the V4 Pro straight out of the box.
Compared with the V3 Pro, the V4 Pro brings three major changes: pure convection instead of hybrid heating, USB-C instead of Micro-USB and an on-demand mode. The V3 Pro used hybrid heating (a combination of conduction + convection). The V4 Pro switches to pure convection, which is the biggest upgrade. Add to that: a completely redesigned glass vapor path, USB-C instead of Micro-USB, faster heat-up time (11s instead of ~15s) and a new three-level airflow slider.
The V4 Pro also introduces an on-demand mode, which the V3 Pro lacked entirely. The colour OLED display replaces the V3 Pro’s simple screen. The build quality has also improved noticeably, with the materials and buttons feeling more premium.
If you already own the V3 Pro and are happy with its flavour, you do not necessarily need to upgrade. But if you want cleaner convection flavour, faster heating and greater flexibility thanks to the on-demand mode, the V4 Pro gives you a noticeable upgrade for roughly 50 € more.
→ Detailed comparison: XMAX V3 Pro vs V4 Pro
Against more expensive models, the V4 Pro performs surprisingly well: it offers convection quality that places model 65 in our ranking directly alongside respected mid-range portable devices. But how does it fare against the competition?
| Feature | V4 Pro | Mighty+ | Crafty+ | DynaVap M7 | Arizer Air MAX |
|---|---|---|---|---|---|
| Price | ~90 € | ~250 € | ~200 € | ~80 € | ~170 € |
| Heating | Convection | Hybrid | Hybrid | Butane/induction | Hybrid |
| Battery | 18650 (replaceable) | Fixed built-in | Fixed built-in | None | 18650 (replaceable) |
| Heat-up time | 11s | 60s | 60s | 5–10s | ~90s |
| Water pipe | 14mm native | Adaptor required | Adaptor required | 10mm native | 14mm native |
| App | No | Yes | Yes | No | No |
| Warranty | 1 year | 3 years | 2 years | Lifetime | Lifetime |
The price differences are striking. The V4 Pro costs about a third of the price of the Mighty+ and half the price of the Crafty+, while matching or outperforming them in heat-up time and water-pipe compatibility. Premium devices lead in build quality, warranty length and ecosystem features such as app integration.
Compared with the Mighty+ (~250 €), you lose build quality, warranty and the app, but you gain pure convection flavour (the Mighty+ is hybrid) and save more than 150 €. The Mighty+ needs 60 seconds to heat up; the V4 Pro is ready in 11. For flavour-focused purists, the V4 Pro’s convection even has the advantage.
Compared with the Crafty+, the gap is even smaller. Similar hybrid heating, smaller battery, almost double the price. The Crafty+ wins on build quality and app integration, but the V4 Pro wins on heat-up speed, battery flexibility and value for money.
Want a different heating style? The DynaVap M7 swaps electronics for butane-powered simplicity at an even lower price. No battery is needed, but you do need a torch lighter and the learning curve is steeper. Looking for premium convection? The Arizer Air MAX offers a similar replaceable-battery concept with better build quality and a lifetime warranty, but at almost twice the price.
The Aeris Ultra is also worth noting as a European alternative, and the PAX Plus if discretion and app integration matter more than pure convection flavour.
No device is perfect for everyone. In these cases, it is worth looking at alternatives:
The V4 Pro works straight out of the box, but a few additions noticeably improve the experience:
Before your first real session, run an empty burn-off cycle at the maximum temperature (220°C) to remove manufacturing residues. The first few draws may taste slightly unpleasant. That is normal and disappears quickly.
Start at around 180°C in session mode with a medium-fine grind. Draw slowly and evenly, around 8–10 seconds per draw. Convection vaporizers reward patience. Fast, aggressive draws do not give the hot air enough time for clean extraction. Once you find your own rhythm, it is worth experimenting with the airflow slider: restricted for maximum flavour, fully open for bigger clouds.
After the first few sessions, a honey-coloured coating will form on the glass mouthpiece. That is normal. At first, it does not affect the flavour, but it should be cleaned before the layer becomes too thick. Regular cleaning keeps the V4 Pro in peak condition and preserves the clean glass flavour that makes this device special.
One more tip: the on-demand mode requires practice. Anyone new to vaporizers should start with session mode until they get a feel for the device. Once your preferred draw speed and temperature are clear, the on-demand mode unlocks better efficiency and the option to take single draws during the day without having to start a full session.
What do you get for less than 100 €? More than you would expect. The XMAX V4 Pro is one of the strongest convection vaporizers in its price class. Glass vapor path, replaceable 18650 battery, pass-through charging, 3 airflow levels, session and on-demand mode and a native water-filter connection. All of that for less than 100 €. That combination is rare at any price point, let alone in the budget segment.
11 seconds heat-up time and pure convection flavour set a benchmark that competitors at twice the price have to be measured against. Is it perfect? No. The one-year warranty is short compared with Arizer or Storz & Bickel, there is no app control, and the glass mouthpiece adds a fragility factor. Those are real compromises.
But considering what the V4 Pro offers for its price, they are easy concessions to accept. If you are looking for the purest convection flavour under 100 €, the V4 Pro is the device to beat in 2026.