COMPLETE PORTABLE VITAL STIM EMS 400 Muscle stimulator Unit with Extra self-adhesive Electrodes Pads. Quantity Discounts Available. Electric Muscle Stimulation (EMS Abdominal Toning Stimulators) for the relaxation of muscle spasms, increasing range of motion, reduction and prevention of muscle atrophy, re-education of muscles and increasing local blood circulation. For relief from minor pain (joint pains, muscle aches, etc) and stress. To strengthen muscles, improve overall appearance, and enhance your physical training. INCLUDES: Hard Plastic Carrying Case, lead wires, battery, 3 packages of 4 electrodes (8 premium self adhesive electrodes and four rubber electrodes), manual and instructions. OPTIONAL 110V AC wall power adapter. Technical specifications: Dual, Isolated channels Pulse Ramp: 1, 3, 5 seconds Pulse Frequency: 5, 30, 100 Hz Power Source: 9V alkaline battery Unit Actual Size: 24 x 64 x 95 mm 8 self-adhesive pads and 4 rubber pads Contraction: Variable control (1-30 Sec.) Relaxation: Variable control (1-45 Sec.) Unit Weight: 130 grams (including battery) Modified square wave with zero net direct current (DC) component Constant current 0 - 80mA each channel, adjustable (500 ohm load) One Year Manufacturers Repair / Replacement Warranty. OPTIONAL 110V AC ADAPTER UNIT ONLY $20 more per unit. If you want the optional AC ADAPTER, please specify in the special instructions. EMS400$75.95Size: StandardDeluxe with AC Adapter (+44) We offer a 30-Day Guarantee on all our products!