Specifications: Key Features Brand: Sony Expansion Slots: Memory Stick Pro Duo Platform: Playstation Portable (PSP) Networking: IEEE 802.11b, Infrared Package Type: Core System (Console Only) Storage Type Optical Drive Type: UMD Processor Processor Speed: 333 MHz Display Screen Size: 4.3 in Graphics Maximum Number of Colors: 16.7M Colors Maximum Resolution: 480 x 272 Memory Installed RAM: 36 MB Power Features Battery Type: Rechargeable Lithium Ion Maximum Battery Life: 2 - 10 Hrs (Depending on Medium) Dimensions Height:2.9 in Depth:0.9 in Weight:9.92 Oz