Use alone or with Mobile Lectern Base (APLS260OK, APLS260WT), sold separately For indoor or outdoor sound amplification Powerful 50W multimedia ready amp with stereo input for computer/CD, tape and three mics, outputs for tape recorder and up to four speakers Professional handheld mic with flexible gooseneck and shock mount mic holder Runs on ten D batteries (sold separately) for up to 200 hours talk time, APL-S1460 AC Adapter (sold separately) or converts to a rechargeable system with APL-S1460 AC Adapter and APL-S1465 Nicad Battery Pack (both sold separately) UL/cUL Listed Made in U.S.A. Width: 24 in; Depth: 20 in; Height: 14 in; Maximum Height: N\A.