If u want to buy extra ARRAY, pls search the ASIN: B071KZMKRC; Main unit with double LCD Display; CE certificate;; 5 Modes. 10 coils inside arrays: last 50-60 times;Latest technologies in FIR belt. More effective and powerful. Power:60W; Current: 0.5A/3A; Rated Frequency: 50-60 Hz; Solid carrying case (Aluminum + black leather). Stronger and Luxurious. Large dual LCD display (9cm x 4.5cm)--Show current curved line on the screen Ideal for professional and personal use- suitable for family, individual, beauty club and spa club to work as foot spa, massage tub, manicure tub