The Verb 510 Vaporizer offers high, medium, and low power modes with a preheat function to suit your smoking style. 5-clicks for on/off ensures safety and ease of use. Universal magnetic adapters also make it compatible with most 510 threaded cartridges. The Verb 510 Vaporizer works with all 510 threaded cartridges as long as they are less than 11mm in diameter. Longer cartridges could make it difficult to flip the top closed.