The Vaporesso XROS 4 is a refillable pod system with a 1000mAh battery and up to 30W output across three power modes, with charge status shown by a colour-coded LED indicator rather than a screen. It takes 2mL top-fill XROS pods (0.4–1.2Ω), has an adjustable airflow slider for MTL and RDL, and charges over USB-C (2A) in about 30 minutes. Uses Vaporesso's COREX 2.0 heating technology.