Memup KOON 4GB. Player media type: flash-media, Total storage capacity: 4 GB, Compatible memory cards: microSD. Display: LCD, Display diagonal: 27.9 mm (1.1 "). Audio formats supported: MP3, WMA, WAV. Headphone connectivity: 3.5 mm. Frequency response: 20 - 20000 Hz, Signal-to-Noise Ratio (SNR): 88 dB