KUDOS TO THE WULF MODS KODO The Wulf Mods Kodo Cartridge Battery 9pk is a pack of highly portable, advanced functionality mod-style devices that feature variable voltage designed for oil cartridges of all types and sizes. Measuring just under 2.1" tall, it's one of the smallest and easiest to carry devices on the market. Wulf Mods even incorporates a hanging hole on the top of the battery to attach a lanyard, so it's always right at your side. Since the Kodo mod does not have an atomizer port, the cartridge screws onto the top of the device. This allows for a  unique design that eliminates cartridge width and height limitations familiar with most concealing box-style batteries and makes it much easier to clean the connection area. The Kodo gives you the freedom to use whatever cartridge you like without breaking out your calculator and ruler apps to make sure it will fit, all while remaining super portable. Plus, you won't need to use or replace any particular type of adapter, screw on and go. One large power button is needed to operate the Kodo vape's variable voltage control and preheat output setting. You can click the button five times rapidly to power the device on or lock it for safe travel and prevent it from activating while in your pocket. After it's turned on, click the button three times to select your power level. The Kodo vaporizer has three LED lights to represent each of the three voltage options (2.5V, 3.0V, 3.5V), giving you the power to heat a wide range of concentrated oils with excellent results. Pick one up for yourself in four stylish color options and vape all of your favorite oil cartridges with this unique, portable, and very affordable device. INCLUDES: 1 Battery, 0 Charger. (we recommend you have a micro usb aka android charger laying around before purchase) WARNING: Do not charge with a powerbank of 5V or higher. Do not charge in your car. Do not overcharge or use any other charging cable other than what comes with your battery. Failure to follow these instructions could result in battery damage and frying of the internal system.