Hydrophon array, suitable for high strength in 100 m salt water and UV resistant signal measures. 2 high sensitivity embedded preamplified PVDF sensors per module (-160 dB re 1V/μPa) and 2 hydrodynamic PU modules, mechanically uncoupled. Omnidirectional in transverse plane 6th order. 10Hz-40kHz band-pass filter. Weight < 70kg, is portable by means of stainless steel wheel. 4 independant low impedance outputs and 2 headphone outputs with independant volume control. Battery operated.