Sennheiser PROGILE Wireless Replacement Charging Bar (2.4 GHz)As the name implies, the Sennheiser Profile Wireless Replacement Charging Bar is a dual function piece for use with the ultracompact Profile wireless microphone system. Identical to the unit originally included with the Profile two person wireless system, the unit is sold as a replacement item and allows you to recharge the separately available receiver and clip on transmitters simultaneously, giving you an additional 11 hours of operating time in the