With a durable magnesium chassis top designed with stiff straight lines and soft curves iNNO Design shows of their innovative feel for creative design solutions. The iFP-900 Series has a list of new and exiting features. It comes with a built-in Lithium-Ion battery that delivers 40 hours of playback. Use the adapter or your PC's USB port to fully charge the battery - it takes only 3 hours. Direct encoding function with Autosync makes it possible for the iFP-900 Series to automatically separate music files from a CD. In other words instead of getting one huge MP3 file you get the encoding track by track. Sound Activity Detector (SAD) function saves memory and power. During voice recording the player only record when sound is captured and turns off recording when it's silent. With the iFP-900 Series you have the the ability to connect a separate microphone for extra high quality recordings. iRiver flies to the next level... Specifications Category Item Specifications Audio No. of Channels STEREO (L+R) Frequency Range 20Hz - 20KHz Headphone output 18mW(L) + 18mW(R) : (16 Ω ) at Max. Volume S/N Ratio 90dB (MP3) FM Tuner Frequency Range 87.5MHz - 108MHz S/N Ratio 60dB Antenna Headphone/Earphone cord File Support File Type MPEG 1/2/2.5 Layer 3 WMA ASF OGG BMP Bit Rate Supports 8Kbps - 320Kbps (OGG : 44.1KHz 96Kbps~225Kbps) Tag ID3 V1 Tag ID3 V2 2.0 ID3 V2 3.0 ID3 V2 4.0 System Requirement - Pentium 133MHz or faster - USB Port (1.1 2.0) - CD-ROM Drive - 10MB free hard disk space - Window : Window 98SE/ME/2000/XP - MAC : MAC OS 9.2.2 or higher / Mac OS X 10.1.4 or higher and CarbonLib 1.6 or higher General Dimension 64(W) x 51(D) x 20(H) mm Weight 62g(incl. battery) LCD 1.2 262 000 color graphic LTPS LCD Battery Lithium-ion Rechargeable Battery Languages 40 languages Operational temperature -5 ¦ C ~ 40 ¦ C Memory 512MB Built-in Memory Voice Recording Approx.144 hrs(8kbps) at Max. Playback hours Approx. 40 hrs at MAX (Based on MP3 128Kbps 44.1KHz EQ Normal Vol 20 with LCD Off) USB USB 2.0 (High Speed)