RCA Input ，Can be plug in with Ipod，MP3/MP4Mini size easy to installation by DIY without manual， especially good fit for car， motorcycle bike，boat， every where!Compact Size: 120mm (D) X 147mm (W) X 42mm (H) weight:280gIt has Blue LED light ring round Volume Knob;Bass/Treble tuning.Aluminum alloy solid case and also easy to distribute the heat.