The Energy Device, from KK Energy, features a 850mah battery capable of fast charging very rapidly via USB-Type C port. The Energy Disposable also has adjustable airflow (valve located on the bottom), a 1.2 ohm Mesh coil, 2% Salt Nicotine, 5000 puffs and huge 12ml capacity. The packaging states designed in the USA, but in all of Asias' infinite wisdom, they chose to name this product quite simply: KK Energy Disposable Device. However, they did check all the boxes by making it with a mesh coil, rechargeable, airflow adjustable, great flavors, and a very reasonable price point. The Energy device also has a unique shape in that it's rectangular but with rounded corners so it's comfortable to hold but won't roll away when set down.