Creative Labs Creative Zen Stone 1GB MP3 Player - 1GB Flash Memory. Player media type: flash-media, Total storage capacity: 1 GB. Audio formats supported: MP3/WMA. Headphone connectivity: 3.5 mm. Frequency response: 20 - 20000 Hz, Signal-to-Noise Ratio (SNR): 90 dB. Battery technology: Lithium Polymer (LiPo)