Creative Labs Zen Style M100 4GB. Player media type: flash-media, Total storage capacity: 4 GB, Compatible memory cards: microSD. Display: LCD, Display diagonal: 36.8 mm (1.45 "), Display resolution: 128 x 128 pixels. Audio formats supported: MP3, WAV, WMA, Image formats supported: JPG. Continuous audio playback time: 20 h. Weight: 33 g, Depth: 55.2 mm, Height: 12.6 mm