inputs.text: thoughtless operation compact size - set camera works without giving 2nd thoughtesp car dc outlet fires car started camera power powers starts recording no buttons pressexcellent day night vision lens powerful clear enough record license plate clearly [ day night ] automatically loops recordings saves records recorded video event crash unit auto lock segment due gforce sustained time collisionsmall enough hide vehicle unit hidden plain sight sun visor maximum height visibility backlit screen well illuminated works welldown sides dvr camera battery charge integrity minimal limited 30 40 minutes without power source used setup camera outside car would use short trips without dc power source speaker camera hear sound effects menu selections no microphone record personally not prefer record sound would hear either music muffler noise loud car want mic pic different version cameraoverall great buy great price good way others drive days