JUUL2: Refined and Purpose-Built
The JUUL2 keeps the pocketable form factor that made the original JUUL iconic but adds meaningful hardware upgrades. The device measures approximately 97mm and weighs just 14g — small enough for a jeans coin pocket. The battery is 25–40% larger than the original JUUL, addressing one of the biggest complaints about the first generation. The pod capacity is 70% larger (1.2mL vs 0.7mL), meaning fewer pod changes.
The standout hardware feature is the advanced thermal technology — an innovative heater control system that improves temperature-control precision. JUUL Labs' pharmacokinetic data shows the 18mg/mL JUUL2 delivers nicotine levels comparable to higher-concentration competitors due to increased aerosol production. The device charges via a magnetic dock in approximately one hour.
Original JUUL: Simple but Showing Its Age
The original JUUL remains the simplest device in this comparison. No app, no Bluetooth, no pod authentication. Insert a pod and inhale — that's the entire user experience. The trade-off: a ~200mAh battery that needs charging at least once a day for most users, and 0.7mL pods that run out quickly. The build is reliable but unremarkable. For users who want zero tech friction, the original JUUL still works — but it lacks the access-control features that the FDA now considers when evaluating PMTA applications.
Glas G2: The Compliance-First Device
The Glas G2 is built around its age-verification system. It features a triple-coil system for vapor production, a 350mAh battery, and 1.3mL pods — the largest capacity in this comparison. The device charges via Micro-USB in approximately 20 minutes, the fastest charging in this group. The hardware is solid, but the device's defining feature is regulatory, not performance-oriented: it requires continuous Bluetooth pairing with a verified phone and runs random biometric re-checks during use. If the phone moves out of range, the device stops working.
