Many different design of this styles or type.Feel free to contact. Features: 1) Polarized lenses 2) Music formats: MP1 / MP2 / MP3 / WMA / WAV / ASF / WMV 3) Capacity: 128MB, 256MB, 512MB, 1G 4) Playing time: can continuously play music for about 350 - 400 minutes after full charge 5) Electronic disk: mobile storage support 6) Equalizer mode: 7 different EQ modes 7) Volume: 32-step volume adjustment 8) PC port: USB 2.0 high-speed transit 9) Battery: Li-ion battery 10) Operating systems: Windows 98 / Me / 2000 / XP