... 4,Promotional gifts 5,delicate 1,colorful brick portable mini speaker for iPod /iPhone2,mp3 speaker3,do your own logo4, ... required. -Compact and lightweight,18g only-Audio input: Apple Dock connector -Easy access to up/down volume control buttons-Frequency:50 ... Color: white,black,blue,pink,yellow and etc... Technical Details Speaker Unit:2×1"Full Range Magnetically shieldedFrequency Response:50~15 ...