At a Glance... Unique Wireless Folding Headphone - Plays high quality MP3 from SD/MMC cards Use as a wired headphone/headset LCD Display with blue backlight Rechargeable lithium battery Instant plug and play A-B Repeat function and Equalizer Features Power voltage: 3.7V(400mAH Li-ion rechargeable battery) Static state current: 40uA Output current: 100mA Working time: 5 Hours Max charging power: 200mA Supported file formats: MP3 (MPEG 1, Layer 3) Sampling rate: (Bit Rate) 32/44.1/48KHz (8Kbps~320Kbps) SNR: About 70dB (1 kHz) Sensitivity: 108+/- 3 dB at 1 kHz S. P. L Frequency response: 20Hz - 20 kHz Channel separate rate: 30 dB at 1 kHz S. P. L Speaker resistance: 32ohm +/- 10% USB: 1.1 Memory: No Inbuilt Expandable Up to 16GB Charging power voltage by USB port: 5V Speaker size: 40mm Product Notes LCD displays track information No more tangling and untangling of your earphone/headphone wires! EQ with 5 sound functions A-B repeat function (Not sure what A-B repeat is? Check the FAQ!) The range for A-B Repeat can only be specified within a single track If the ending point (point B) is not set, the end of the track will automatically become the ending point (point B) Package Contents for CVSB-G263 Folding Headphone MP3 Player 3.5mm Audio Cable USB Cable Image for illustrative purpose only… Delivered within 7 to 15* working days Applicable Octroi charges should be paid by the consignee.