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MINI Portable SpeakerDescription It comes with USB audio DSP processor, which will automatically be recognised by a computer. Convenient 3.5mm audio interface can also connect to MP3 Players, iPods, iPhones, iPads, mobile phones easily. Built-in rechargeable lithium battery allows you continue to enjoy wonderful music without unnecessary wires. Use with a computer(USB Powered): 1.Connect the speaker to a computer using the USB cable included, the indicator light will turn into red or orange. If the indicator turns red, please press the switch on the bottom. 2.Use the Windows media player or any AV Player of the computer to playback media files, then the sound will come from the mini speaker. 3.Either use the computer system volume control slider to adjust the volume, or you can also directly control the volume within the media player. 1.mini portable speaker. 2.d-class amplifier. 3.factory price. 4.high fidelity sound. 5.all sizes, colors,models Speaker4ohm, diameter:40mmLine Input3.5 mm ψWorking Timeabout 10 Hours (medium volume, random music)Li Battery Capacity400mAHBattery Voltage3.7VBattery Charging Voltage4.2 5VBattery Charging TimeAbout 3 HoursRating Power2WPower Supply InputMINI USB (5V/500mA)Weight0.063kgDimensions60mm(D)*45mm(H)ColorBlack,Red,White. 1) excellent quality, competitive price, prompt delivery, great service and solid reputation2)original package with tags and labels3)fast samples delivery 4)low minimum order5)fast shipment in 5-7days responsible customs clearance6)best and timely service for each customers' order we also offer mini portable speaker,portable audio and so on. Recharging 1 via a computer's USB port 2 via a compatible DC mains charger Tips: Red light indicates unit is charging while not in use; Orange light indicates charging while unit is in use, while charging while playback; Blue light indicates that charging has been completed or in offline status (not connected to a computer USB port). Music Source: * 3.5mm audio LINE-IN Simply connect your mp3 player, iPods, mobile phones via standard 3.5mm headphone socket. * USB Audio DSP (Digital signal processing) Technology Simply connect the USB cable to a PC, the computer will install driver software automatically. No 3.5mm line-in cable required, because there is a built-in digital sound card inside the speaker. Specifications :Output : 2.4 WRating Power : 1.8 WSize : 50W x 50L x 35H (mm)Speaker : 36 mm micro speaker, 4 OhmFrequency Response : 100Hz-20kHz Signal to noise : >85dBDistortion : <0.5%Battery Voltage : 3.7VBattery Capacity : 250 MAHBattery charging voltage : 4.2V0.05VCharge Time : DC(2.5 hours), USB 4HoursColor : BlackShape : Like a hamburger Diameter : 4.8(D) x 3.8(H)cmAudio Cable Length : 7 cmUSB Cable Length : 60 cm(24 inch) MINI Portable SpeakerItemMultimedia speakerModel NumberYX002Special FeaturePortable, MiniSpeaker4ohm, diameter:40mmLine Input3.5 stereo audio earphoneWorking Timeabout 10 Hours (medium volume, random music)Li Battery Capacity200mAHBattery Voltage3.7VBattery Charging Voltage4.2 5VFrequency Response130Hz 22KHzS/N Ratio≥90dbUSB power cordoptionalBattery Charging TimeAbout 3 HoursRating Power2WPower Supply InputMINI USB (5V/500mA)Weight0.060kgDimensions54.0*17.0 mmUseHome Theatre, Portable Audio Player, Mobil, laptopColorOptional