Display Window Display Size: 1.5 in Screen Resolution: 176 x 132 Pixels Compatibility Supported Audio Formats: MP3, AAC, WAV, AIFF, MP3 VBR, Audible, Apple Lossless Supported Image Formats: JPEG, BMP, TIFF, PNG, GIF Supported Video Formats: MPEG-4 Operating System Requirements: Mac OS X 10.3.4 or Higher, Windows 2000 or Higher, Windows XP or Higher 1) Good materials 2) Superior quality 3) Competitive price 4) Excellent service