Ems 5.0 Muscle Stim Analog Unit, Portable, System Includes The Following: Device, Lead Wires, Four Self-Adhesive Reuseable Electro, Sold As Each Compa Compass Health Ems 5.0 Muscle Stim Analog Units Compass Health Ems 5.0 Muscle Stim Analog Units The Ems 5.0 Muscle Stim Analog Unit Is Designed For Personal Use, However It Is Strong Enough To Be Used In An Office Setting. The Ems Unit Uses Electrical Impulses To Contract And Relax Muscles Helping Those Who Experience Muscle Tension In The Upper Back And Neck Areas. The Ems Unit Is Portable And May Be Clipped To A Belt, Shirt, Pocket Or Other Clothing. Ems 5.0 Muscle Stim Analog Unit, Portable, System Includes The Following: Device, Lead Wires, Four Self-Adhesive Reuseable Electrodes, 9-Volt Battery, Hard Plastic Carrying Case, And Instruction Manual, Basic Assembly Required, 1 Year Warranty (092877)Sku: Ndc-10315973_Ea Mfgr Sku: 10001098Item Id: 10315973Mfgr Id: 912Item Code: Chb De5030