Philips | LBB 3530/50 Delegate Discussion Unit - Microphone with extra-long, flexible stem. - Compact, attractive delegate discussion unit. - Built-in loudspeaker. - Two headphone sockets. The LBB 3530/50 is stylistically and functionally identical to the LBB 3530/00 standard Delegate Discussion Unit but has an extra-long microphone stem. This is ideal for delegates who wish to stand up when speaking. Delegate Unit with Long Microphone Made in HOLLAND