This is a private label battery with a USB charger, stylus for your electronic devices, buttonless, 5-10 universal thread and fits any universal cartridge. We only sell universal, 5-10 threaded cartridges, so this will accommodate any cartridge on our menu. These have a 30-day warranty. These normally retail for $25-$35 from vape pen companies, but we sell these black labeled vape pens for only $9.95. We also give them away for FREE in some of our Bulk Packs in our DEALS section of our website, or you can also get one for FREE when you order (2) or more cartridges. NOTE: Please consider using the stronger, variable temperature vape batteries if you plan on smoking the stronger THC, wax oil cartridges like Heavy Hitter, for instance. The higher THC, wax oil cartridges need the higher temperature vape battery to burn effectively. We also carry those they are called the 2.0 Variable Temperature battery and we sell them for $14.95. Please ask us if you have any questions about the different batteries we carry and what would work best for your needs.