mini usb stereo portable mobile speaker

FeaturesUnique simple and shape design, with independent intellectual property rights.MDF wooden speaker cabinet, effectively reducing the cabinet resonant noise.MP3/WMA Dual decoding master chip.Automatically search and read and play SD / MMC cards and USB disk MP3/WMA music format, support multiple subdirectories.LED display.FM stereo radio.Full-function infrared remote control.Inserted after the first play function.Breakpoint memory.Digital volume control knob, narrow 360 degree rotation barrier.Taiwan's low-power Class-D digital amplifier, the effective use of power for more than 90%.2-inch HiFi stereo speakers, Clear treble, alto sweet, strong bass.Built-in rechargeable lithium-ion battery, life playing time more than 4 hours. Finish: dark red wood, black plastic panel Wins in the details Ports: USB input terminal *1 PCS, SD/MMC card Block *1 PCS, Headset terminal *1 PCS, Audio input terminal *1 PCS, Mini USB terminal *1 PCS Standard packaging materials SpecificationsAcoustic system:Speaker System: Associate Professional 2.0 channel stereo speaker systemSystem Type: Road Second-oriented systemsConfiguration: 2-inch full-range speakerFrequency Range: 90Hz 16KHzSensitivity: 85dB (2.83V/1m)Rated impedance: 4ΩPower range: 1 3WAmplifier unit system:Rated Power: 3W x 2 RMSSeparation: ≥ 49dBSNR: 74dBDistortion: THD ≤ 10%Input Sensitivity: AUX ≤ 500mVInput impedance: 32KΩFM stereo radio; LED display;