Multi-frequency head operates at 1.3 MHz with contact control, waterproof for administering treatments under water. Output of 0-2 Wcm² in continuous mode and 0-3 Wcm² in pulse mode. Models EL.29-UT and EL.30-UT: Option to connect the unit to electro-therapy units EL.19-EL, EL.20-EL and EL.22-EL for combined applications.