Product Features This unit comes with the following: 16 Ounce Lavender Scented Salt, CS-900 Array, 2 black cylinder arrays, 2 wrist strap, 1 power cord, 2 ear phone plugs, 1 carrying box and 1 instruction book. Cell Spa Detox Foot Bath Premium 16 Ounce Lavender Scented Epsom Salt Crystal Magnesium Sulfate To Help Detox, Relax, Relieve Stress, Promote Healthy Toenail, Eliminate Odors & Soften Your Feet. For Foot Soaks: Dissolve 1 1/2 tablespoon (1 ounce) of Epsom Salt in a foot tub of 1 gallon of warm water. Soak for 20 minutes for the relaxation of your feet. For Foot Detox Session: Please use clean filtered water. Never use well or spring water. Please use 1-2 wooden teaspoon (2 grams) of Epsom Salt in a foot tub of 2 gallons of warm water for the best ionization inside the water. Please do not add the Epsom Salt if the E factor reaches 2.0 for the Cell Spa Detox machines. If too much salt is added, your machine can alarm and stop working. When the machine alarms or stops, please drain the water and redo with clean filtered water without any salt. Please do not add the Epsom Salt if the E factor reaches 2.0 for the Cell Spa Detox machines. The optimal E or PH factor should be around 1.2- 1.5. CELLSPA Advance-Pro CS-900 Dual Coil Array The newly designed CELLSPA Advance-Pro CS-900 Dual Coil Array is the first type of flat array designed for optimize performance. We have engineered a modern, advanced flat type of dual coil construction designed to optimize for detoxification experience. Please do not add any salt in beginning. Please use clean filtered water. Never use well or spring water. This array only needs to put a small pinch of salt, about 1-2 grams. If too much salt is added, your machine can alarm and stop working. When the machine alarms or stops, please drain the water and redo with clean filtered water without any salt.