The Archos 204 is an HardDisk-based MP3 player, with 20Gb of memory. It has USB connectivity and claims 20 hours of battery life. The display is a 1.8" 262-color PMOLED.

OLED type: 

1.8", 262K color OLED

Tags:
Atomic Force Microscopy for next-gen OLED processesAtomic Force Microscopy for next-gen OLED processes