EW Variable Voltage Range (2.0V to 4.0V) NEW Voltage Setting Clicks into Place NEW Pulse Wave Technology and Buzzing Feedback NEW Prep Mode and Safe Sesh Mode NEW Auto Draw Feature NEW Longer Battery Life NEW USB-C Charging - Use While Your Charging NEW Sleeker Look 510 Threaded to Fit Most Cartridges Auto Shuf-Off Feature Indicator Lights Ooze USB Smart Charger Included Available in Several Colors