1. Updated vertical coils 2. Organic Cotton Coil (OCC) 3. New patented coil head 4. Japan made cotton 5. Square outer casing: last longer, provide purer taste and has a larger heating section. 6.Resistance:0.5Ohm(fit 15w-60w),1.2Ohm(10w-26w),1.5ohm(10w-26w).