SMOK V8 X-Baby X4 Coils features a three-pack of replacement 0.13 ohm coils for the Smok X Baby Tank. These coils utilize a quadruple coil design made with pure organic cotton with a wattage ranging anywhere from 30-70W and a prime wattage of 45-60W. Enjoy full-bodied flavor and sweet puffy clouds with these delightful X-Baby X4 coils! Product Specifications: Organic Cotton Kanthal Quadruple Heating Element Resistance: 0.13 ohm Recommended Wattage: 30W – 70W / Best 45W – 60W