BAT Rothmans, the Korean unit of British America Tobacco, debuted its new e-liquid cigarette product Vuse 800 in Korea on Monday, marking its first launch in Asia. The battery-powered device allows up to 800 puffs without charging, with four flavor options available. Vuse is the bestselling e-liquid cigarette brand in the US, making up 46 percent of the market share. (BAT Rothmans)