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Promotional Hamburger portable speaker for ipod,mp3,mp4,notebook,cell phone ect Hamburger Portable SpeakerSpecifications: 1)Product Dimensions: D (52MM) * H (64.5mm)2)Weight: 50G3)Material: Frosted Silicone4)Color: Green / Blue / Purple / Rose / Black / Orange / White / ect.5)Lithium Battery: 300MA6)Working time: 3-6 hours7)Operating voltage: 3.7 V8)Speaker: 2.2W * 1Hamburger Portable Speaker Description: 1)MINI Speaker HI-FI speaker Hamburg mini speaker Promotional speaker2)No external power source, anywhere can enjoy the music! 3)Small cool shape, trendy, personalized with color, fresh and natural.4)Unique design philosophy - telescopic extension speaker. 5)Independent speaker amplifier circuit board, so that small speaker sound quality music, sound to play the most! 6)Ready to MP3, cell phone music player with small speakers. 7)To play MP3/IPod / phone / NB / CD, etc..8)For computer speakers, you can edge charging, use, and without fear of power was depletion! 9)Increase the volume when the speaker can see the vibration, to bring you the feeling ofshockPromotional Hamburger portable speaker for ipod,mp3,mp4,notebook,cell phone ect all colors of portable speaker package for hamburger portable speaker