The Yocan Ziva is back! This ingenious 650 mAh battery fully hides your (up to 2g) 510 cart inside. It is the epitome of discretion and is small enough for a quick pocket puff. The OLED screen offers voltage control and can also track temp, battery life, puffs and much more. Durable and sleek, the aluminum alloy exterior can handle day to day use. A magnetic connection lets you easily attach carts. The USB-C charger can keep it powered up for up to 2 days of regular use.