Specifications of SOS COMPUTRISED LCD INTRFERENTIAL UNIT-125PROG. MUSCLE SPASM Electrotherapy Device (SOS-121) General Treatment Time 30 mnts or as desired Display Type LCD Number of Programmable Profiles 125 Designed For mussel or nerve contracture Electrodes 8 Warranty Covered in Warranty one year Warranty Summary one year Warranty Service Type offline service Not Covered in Warranty Breakage / Mishandling Power Features Battery Type N/A In the Box Sales Package one machine