Voltcraft bs 500 professional endoscope base voltcraft bs 500 p an easy to use endoscope base unit with battery operation and 6 35cm lcd monitor the base device can be combined in any way with different endoscope cameras in order to get always the suitable endoscope for your application the bs 500 possesses a continuously adjustable brightness function of the attached endoscope camera and has a battery runtime of 3 hours p voltcraft bs 500 professional endoscope base