Body Farm 2-in-1 GEZANNE Electronic Body Slimming & Bust Machine Model no. HS-937 Original Price: ¥29,800 Purchased from Nissen a long time ago for ¥28,000. However, it has been stored unopened. According to the manual, it runs on one 9V battery. It has body pads and bust cups, and you use it by attaching them with the included belt or securing them with a bra, then turning on the power. No included gel. The instructions say to wet the pads with tap water. The low frequency seems to gently reach the muscles. Please read the instructions and use it.