Description The PROF 88 can run for four hours on its batteries, or continuously from a tractor or vehicles power using the SP88 12 volt cigarette lighter socket cord. The internal batteries can be charged from the optional NC-9 charger, or from a tractor with the SP88 cord. This helmet features the NC-9 Charger NC-9, 110 Volt power supply, ZP3 HEPA dust filters, NIOSH approval #TC-21C-633, Cigarette lighter socket
