The Stache SLIM Digital Battery gives you precise voltage control in a pocket-sized form factor — with a digital screen that shows exactly where your settings are, so you’re never guessing. Slim enough to disappear in your pocket, powerful enough to handle all-day sessions. The digital display sets it apart from standard twist-dial batteries, giving you real-time voltage readout and one-button control over your entire experience. Voltage Settings: 2.8V — smooth, low-temp hits 3.2V — balanced flavor and vapor 3.6V — stronger output 4.0V — maximum power