The Kodo battery has adjustable voltage settings ranging from 1.8V to 4.2V, you can customize your session to suit your preferences, giving you the power to heat a wide range of concentrates with excellent results. The Wulf Mods Kodo PRO Battery is a highly portable, advanced functionality mod-style device that features variable voltage designed for devices 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.