Compatible with Nikon Df, Z7, Z7 II, Z6, Z6 II, Z5, D750, D780, D7500, D7200, D7100, D7000, D5600, D5500, D5300, D5200, D5100, D5000, D3300, D3200, D3100, D610, D600, D90, COOLPIX A, COOLPIX P1000, COOLPIX P7700, COOLPIX P7800, COOLPIX P950 Cable length: 1.2 m. Works without battery The button on the remote control can be pressed completely or halfway through: a halfway press activates the autofocus and settings of your housing. Full press takes the picture Prevents the risk of blurring caused by camera shake during triggering Manufacturer's warranty: 1 year.