GIMA 30 TENS - 4 channels Portable electrical muscle stimulator with 4 channels and 30 programmes. Backlit LCD display. Frequency: 2 to 2000 Hz. Supplied in a nylon bag with 4 AA batteries and 8 reusable electrodes. Size: 162 x 10.7 x 120 mm LCD size: 31 x 37 mm Weight: 200 g Manual: GB, FR, IT, ES, PT.