usb mini speaker

mini speaker/portable mini speakers/mp3 mini speaker 1,mini speaker 2,top quality,fashion appearance and factory price 3,TF,USB card slot 4,Certificate: CE.ROHS 5,MOQ:100pcs Our factory provide high quality,fashion design andgood price products, welcomeOEM and ODM.... Specification: Digital mini speaker, OEM, high fidelity Supporting SD/MMC,PC,USB,Mobile etc. Built in 750mAh rechargeable lithium ion cell Dimension:219*72*40mm Speakers: D:Ø50mm Digital mini Speaker Supply voltage:3.7v Charging voltage: DC5v/500ma Output:3W*2 SNR:80dB Distortion:0.3% Dimensions:22*2*7cm Accessory:50cm 3.5 single frequency line 1 pc 50cm 3.5DC line 1pc Packaging & Delivery: Packaging Details: Color box and Cloth bag Delivery Details: if the quantity less 200pcs,we can provide the goods within 3day Specifications: Multimedia Speaker SD card & U disk Support Buil-in mp3 player USB and Li-ion Power-supply Excellent bass performance Multimedia Speaker Technique & Parameters: 1, Sperker Specifications: 1.5-inch 4 2,Output Power: 5W 3,Frequency response: 90Hz-20KHz 4,Sensitivity: 80db±2db 5,SNR:≥80db 6,Distortion:≤0.3% 7,fade-in fade-out function,to pretect the speaker from demage 8,Memory store last song when power off 9,Support any capacity SD card & U disk 10, Rechargable and replaceable lithium battery Outer carton and SPECIFICATIONS:Audio FormatMP3Working Current≤450mAPlay timemore than four hoursFunctionRadio.mp3.output ectCharging VoltageDC5VRated power2.5W x 2Frequency Response150Hz-20KHzSensitivity600mvSize220mmx72mmx35mmBatteryThe built-in Li-ion batteries 800/1000mA