2014 Version 10 Modes Healthmateforever Super Value Tens Electrotherapy unit for pain management, light & portable Handfree Palm Size Digital Electronic Pulse Massager Unit for Electrotherapy Pain Management, as powerful as the one used in the chiropractor office, Acupuncture Physiotherapy Machine, It Has Backlit, Two Independent AB Channels, Independent Modes, Liftetime Warranty. This new model is based on Pro-8AB, but THREE NEW FEATURES: - modes and intensity are separately controlled in Channel A and Channel B. - it has two more custom made modes for legs and feet. It can treat two people or 2 targeted areas with different mode and intensity. It has double value just like using two TENS units to save lots of treatment time. Especially very helpful in multi pain relief, the injury recovery, post surgery recovery, muscle relaxation. - 80 minute timer setting. 100% Quality Guarantee, Lifetime Warranty.