The Geekvape Aegis U 1.1ohm Cartridge features a 2ml capacity with a side filling design, suitable for various Geekvape U series devices including the Sonder U, AU (Aegis U), Obelisk U, Wenax U, and Digiflavor U Pod Kits. It operates at a resistance of 1.1Ω and supports a power range of 9-12W, making it a reliable choice for consistent vaping performance.