VooPoo Starter Kits Vapor Authority VooPoo Caliber Review and Instructions. The Specifications, Features, Build, and Design Voopoo Caliber 110W Vapor Pen With Uforce Tank The VOOPOO Caliber 110W Starter Kit is a new addition to the vape pen segment, featuring the advanced GENE.FAN chipset with internal 3000mAh internal battery to pair with the UFORCE Sub Ohm Tank VooPoo Starter Kits Vapor Authority VooPoo Caliber 110W Vape Pen Starter Kit $28.10