MP3 Players Fully functioning gadget black steel pen direct from the best gadget makers in China, featuring a built in 2 GB MP3 player, plus a built in high quality MIC for record hours of audio for study or for spy recording of what people are saying. With this handy device, take a nap in class and later... Main features: Memory: 1GB-4GB Music Format: MP3, WMA, WAV, ASF FM Tuner: 87.5 MHz to 108 MHz Bit rate: 32-320Kbps Built in MIC Record Format: WAV Earphone Jack: 2.5mm SNR (Signal to Noise Ratio): >85dB Output of earphones: 2x11mW (32Ohm) USB: 2.0 System: Window 98/ME/2000/XP/Vista, Mac 9.2+, Linux 2.4+ Power Source: Built in Rechargeable Li-ion Battery 230mAh Color: Silver with Black Rubber Grip Dimension: 14mm diameter x 144mm L Other Features: 4 button control Full Metal Housing with Chrome Detailing Replaceable standard ink cartridges LED indication Accessories: Mp3 Earphone Mini CD with Driver and Media Manager Software user manual