Qysea - FiFish W6 4D Distance Lock Module4D Distance Lock Module Utilize augmented reality technology (AR) for accurate object measurements; effectively determine, measure, and fix the height, front, and distance between the FIFISH ROV and targeted object, with real time automatic adjustments. ITEM SPEC. Depth ~ 350m Current ~ 200mA Voltage ~ 9V 26V Range ~ 0. 3m 7m Operation Temperature ~ 10~60 Forward Sonar Quantity ~ 2 Downward Sonar Quantity ~ 2 Side Sonar Quantity ~ 2