Hua Tuo SDZ-II acupuncture stimulatorElectro Stimulator with 6 channels and digital timer (type SDZ II) Proven device from Hwato for electro acupuncture. 6 channels. Operating optionally with power adapter or batteries. Current strength individually adjustable for each channel. 3 stimulation patterns with adjustable frequency. Can also be used as a TENS device with the electrodes supplied. 2 year guarantee. CE certified. Set includes: SDZ II electro acupuncture device with digital timer