Electric Lumbar Traction Device, Multifunctional Back Traction Device with Dynamic Airbag Traction, 20-Level Electrotherapy, 3-Level Vibration Massage and Thermal Therapy from 113 to 131 ℉. Plug and Play: The electric lumbar traction device combines multiple physical therapy functions, such as traction, hyperthermia, electrotherapy, and vibration.