The CFV is the latest offering from Boundless and it is an evolution of the original Boundless CF. It uses full convection heating to perfectly vaporize your material but offers a few unique features which help it rise above the rest. It's biggest change is the interchangable heat retention rings which line the chamber. There are Quartz and African Rosewood options included and other options available from Boundless like Bamboo. The different rings offer different flavor profiles and also offer different heat retention characteristics so that, along with the fully djustable temperature, you have the most customizable vaporizer on the market right now. The big built in battery will give a couple of hours of constant use between charges and they include a USB charging lead for the device.