Enjoy long-lasting Alpine Vapor fun and make the most out of your Apex's four intuitive power settings with these matching experiences: The Alpine Apex Battery is a 260mAh, 2.4v - 3.6v variable voltage battery compatible with your very own Alpine Apex. - Green (2.4v) and Blue (2.8v) lower settings: Long and slow draws - Purple (3.2v) and Red (3.6v): Increased dose and cloud size The Alpine Apex Battery is powered by a 260mAh lithium-ion battery. Features include: - Auto shut down - LED status indicator - USB-C charger - Universal 150 thread cartridge-compatible Specifications: - 260 mAh - 2.4v - 3.6v - Variable voltage