The B320-C is a classic, market-proven 510-thread vape battery with over 3 million units sold worldwide in the past five years, delivering exceptional reliability and stability. It features premium A-grade cells with UL safety certification for maximum protection against complaints or losses. Enjoy convenient dual charging via USB-C or 510 port, plus three adjustable voltage levels (2.6V/3.3V/4.0V) and a preheat function to perfectly match various cartridge oil viscosities for an optimized vaping experience.