The Famovape AIO Kit is a smart and classy little device, with a maximum output of 40w. The Magma AIO uses the Magma replacement coils that are available in 0.4ohm and 1.2ohm resistance, these coils have been specially designed with userbility in mind, the 0.4ohm coil is best between 15-40w and will provide the user with great flavour, a less restrictive draw and the great vapour production, wherass the 1.2ohm coil is best between 8-15w and will provide with a nice tight restricted vape, sitll producing great flavour but wont produce as much vapour porduction as the 0.4ohm.