FTM-500DR 50W C4FM/FM 144/430MHz Dual Band Digital Mobile Transceiver. The FTM-500DR shares the YAESU advanced core features, and utilizes the latest C4FM Digital technology. 
Front Speaker with AESS* Dual Speaker System *(AESS: Acoustic Enhanced Speaker System)
Total 9W Clear & Powerful High-fidelity Audio, delivered by the Front Panel 6W and the Main Unit Internal 3W speakers