Nugz Incognito 510 Thread Battery. Yellow, Stealth 510 cart storage, OLED screed with a puff counter... All the features of the traditional Ziva pro, but now with that Nugz flair. USB-C recharge, puff counter, 1.8-4.2v, 10 second preheat, no magnetic adapter needed. Slim and discreet, perfect for pockets or stashed in a clutch. Nugz Incognito 510 Thread Battery.