... casing: Signal input, volume, MP3 input, volume bass, treble, 6.5 “inch speaker. , 250*150*2803DG-25REffect storage battery 25w sound box ... , cut, bass, tenor, treble, volume, earphone, ultra thin type, .6.5 “speaker. , box body size: 285*120*275 10GA-1010-15 W ... , volume, earphone, ultra thin, inclined 45°. belt iron stand .6.5 “speaker. , box body size: 285*120*275 2012 electric guitar amplifier ...