New Digital 510 Slim Vape Battery Features: * Digital Slim Vape battery * 3 Variable Voltages * 18s/15s Preheating * 400mAh battery Specification: Battery Capacit: 400mah Length: 90mm Diameter: 11.2mm Output Voltage: 2.8-4.0V Preheating Output: 1.2V Preheating Time: 12S Kits including: 1x Digital Slim Vape Battery 1x USB Cable 1x Paper box