The PAX 4 is the most powerful vaporizer PAX has ever produced. The 2026 flagship adds a high-output hybrid heater, four intelligent heat modes, USB-C charging, and a redesigned stainless steel oven while keeping the pocket form factor that made the PAX Plus 7.4 the portability benchmark.
At 125 g and 108 mm tall, it remains one of the most pocketable session vaporizers in our testing lineup. Build quality and portability rank among the highest of any portable on our best portable vaporizers list.
PAX's "high-output hybrid" heater delivers noticeably denser clouds than previous PAX models. Vapor density still trails dedicated hybrid portables at similar prices. If pocket stealth is the priority, the PAX 4 earns its spot. If vapor quality comes first, the competition delivers more.
What's in the box
The PAX 4 ships with the vaporizer, a flat mouthpiece, a raised mouthpiece, a PAX multi-tool, three oven screens, a wire brush, and a USB-C charging cable. Unlike the PAX Plus, there is no concentrate insert. The PAX 4 is dry herb only.
The 125 g aluminum body sets the portability standard
PAX refined what was already one of the most pocketable forms in dry herb vaping. The anodized aluminum shell measures 108 × 36 × 29 mm and weighs 125 g.
The LED petal indicators carry over from previous PAX models, showing battery level and heat mode status through color patterns. You can check battery level by shaking the vaporizer during a session.
The stainless steel oven features a wider profile with a funnel-shaped opening that holds up to 0.3 g of ground cannabis. The redesigned shape improves airflow and makes loading cleaner than previous models. A stainless steel vapor path runs from oven to mouthpiece, and the food-grade silicone and aluminum mouthpiece keeps a low profile.
Four intelligent heat modes with hybrid heating
PAX's high-output hybrid heater combines conduction and convection, delivering up to 50% more vapor output than the PAX Plus. The intelligent heat modes dynamically adjust temperature as you draw, increasing output during inhalation and cooling between hits to preserve material.
The oven reaches temperature in approximately 55 seconds per PAX's specs, though real-world testing from multiple reviewers puts this closer to 75-90 seconds depending on battery level. Four preset heat modes span 190°C to 220°C (374°F to 428°F). The modes use intelligent temperature feedback rather than fixed degree targets, adapting to your draw pattern throughout the session.
