The T30 is an incredible value in a small, ultra-portable design. The T30 is PlaysForSure verified to support subscription-based music download services, giving you instant,affordable access to millions of songs. It also features battery life up to 24 hours on one AAA and a voice recorder. Features and Benefits Back to Top Retail Color: Silver Plays up to 17 hours of music* 512 MB of internal storage** Supports subscription music services Up to 24 hours of battery life Skip-free listening Voice recorder Record music from any source (no PC required) Plays MP3, WMA and OGG music files Enhanced 3D audio (supports SRS WOWT) PACKED WITH iriver earphones USB 2.0 interface cable Printed manual Installation CD AAA battery PC SYSTEM REQUIREMENTS Windows XP (SP1 or higher) Windows MediaPlayer 10 CD-ROM Drive USB Port Specifications Back to Top Audio No. of channels Stereo (R+L) Frequency Range 20Hz ~ 20KHz Headphone output (L)18mW + (R)18mW (16 Ohm) max. Volume S/NRatio 90dB (MP3);A Weighted File Support File Type MPEG 1/2/2.5 Layer 3, WMA, ASF, OGG Bit Rate Supports 8Kbps ~ 320Kbps (OGG: 44.1 KHz, 96.1 Kbps-225kbps) Tag ID3 V1 Tag, ID3 V2 2.0, ID3 V2 3.0, ID3 V2 4.0Power Supply Battery 1.5V AA General Dimension 2.4" x 1.2" x 1.9" Operational Temperature -5 C ~ 40 C Memory 512 MB USB USB 2.0 Playback Hours Approx. 24 hrs(AAA Battery 1EA, 128 kbps MP3, Vol 20) Specifications subject to change without notice.*Up to 17 hours of music using Windows Media format at 64kbps.