This is a smaller version of the Kanger Aerotank Mega. The Kanger Aerotank Mini features a new design and improved configuration. The design includes interchangeable pyrex glass tube with 1.3ml capacity. The industry leading air flow control has been upgraded and improved to version 2, delivering higher performance and precision. The Kanger Aerotank Mini also features an upgraded new dual coil design with resistance: 1.5 ohm.