The thinnest flash MP4 player on the market to date. At only 4.5mm depth (aprox the size of 4 or so credit cards stacked on top of each other), this is the PMP to get if you are looking for the most features possible, without having to Take up too much pocket space. Crammed in are such features as 4GB of internal flash memory, easy touch button control, a MIC recorder, a high brightness 160x128 resolution screen, and more. Customers, dropshippers, and resellers; be the first one on your block to own and sell this world slimmest MP4 player. China Manufacturer Specification -Memory: 4GB -Display: Size: 1.8 Resolution: 160x128 -Supported Formats: MP4, MP3, WMA, ASF, WAV -Bit rate: 32~320Kbps -FM Radio: 87.5-108Mhz -Built in MIC Record Format: WAV -Earphone Jack Output: 5mW + 5mW -Earphone Jack Size: 2.5mm -SNR (Signal to Noise Ratio): 75dB -Languages: English, Korean, French, German, Italian, Dutch, Portuguese, Spanish, Swedish, Czech, Danish, Polish, Russian, Turkish, Thai, Romanian, Greek and Hebrew -USB: 2.0 (1.1 Compatible) -System: Windows 98SE and Later, MAC OS 9.2 and Later -Power Source: Internal Lithium Ion Battery -Dimension: 85x54x4.5mm -Manufacturer Ref.: G9536FUECW82 Visit the Chinavasion.com website to check out prices and more details search for item code: CVSJ-1304-4GB