Rechargeable system. This product should only be used with other Blu products. Sale only allowed in the United States. Nicotine Concentration - 2.4%. www.blue.com. FCC listed. Questions/Comments call 888.207.4588. Blue Plus+ Xpress Kit: 1 Classic tobacco Blu Tank 2.4%; 1 Blu Plus+ rechargeable device; 1 Blu USB charger. Flavors made in the USA with domestic and imported ingredients. Made in China.