The UWELL Caliburn G4 is a refillable pod system with a 1300mAh battery, 5–35W output, and a 0.85″ HD colour screen showing mode, puff count and battery with day/night themes. Its U² anti-leak 2mL pods top-fill without removal (ships with 0.4Ω and 0.9Ω GPP coils), airflow adjusts via a slide valve, and it charges over USB-C (5V/2A). PRO-FOCS 4.0 flavour tech.