3 channels Hand Arm and Whole Body vibration meter. Optional 4th channel SEAT measurement (Seats efficiency) or simultaneous noise and tri-axial acceleration measurements. Large LCD screen, 2 MB RAM, AC output (4 channels) and RS232 Interface. All transducers and accessories suppiled. Compatible with ISO 8041, 5349, 2631-1 human vibrations standards and IEC804 type 2 for optional Noise measurements.