The UWELL Caliburn G4 Pro steps up to a 1800mAh battery and a 2.51″ shatterproof colour touchscreen with Storm, Waves and Custom power-curve modes, six UI themes and eight languages. It uses U² anti-leak 2mL GPP pods (ships 0.4Ω + 0.6Ω), stepless airflow, and USB-C 5V/2.5A charging. Custom mode tunes the start, middle and end of every puff.