The Core arrives with remarkable simplicity yet the same technical precision you’d expect from Vessel. Core is powered by a smaller, compact battery and similar controls and variability across the line. -Features a wide 510 crown to accommodate cartridges of all diameters-Powered by a high-quality 260mAh lithium-ion rechargeable battery core-3-LEDs indicate battery life and power settings-Four (4) power/voltage settings (2.4V, 2.8V, 3.2V, 3.6V)-USB-C charging port + cable-Compatible with Rover Cases-Dimensions: 3.3"L x 0.55"D-Weight: 23g-Six (6) month limited warranty