True to their namesake, Incognito batteries are as discreet as they come. You won't have to worry about scrutiny or vulturous friends. LED screen upgrade to monitor battery life, temperature voltage display, and puff count. Change the voltage of Incognito products with a quick few, repetitive inhales from the device. The minimalist and modern style of Incognito batteries are sure to fit in your life and pocket. Incognito batteries support 510 thread cartridges of 0.5g, 1g, and 2g sizes; the most common on the market.