About the O.Pen Sesh e-RigO.Pen Sesh is an E-rig built for your convenience. Enjoy your favorite concentrates with the load-your-own feature, or 510 threaded carts. With 1 button controls you can change your temperature, and dose, allowing you to enjoy your vapor your way.Features: Automatic e-rig  Compatible with 510-thread cartridges & concentrates (load concentrate into the porous atomizer by unscrewing the metal cap) Simple dose control - keep it minimalist or maximalist, your choice Seshable, sharable glass cup Variable voltage temperature control (2.7V - 4.0V) Easy-to-clean & built with food-grade materials 1,000mah battery capacity ~200-250 cups per charge 1 Year warranty