Zebra MC9090-G, 3.8", 0.128 GB, MMC, SD, RAM, 128 MB, 0.624 GHz Zebra MC9090-G. Display diagonal: 3.8". Internal memory: 0.128 GB, Compatible memory cards: MMC, SD. Processor frequency: 0.624 GHz. Operating system installed: Windows Mobile 6.1. Wi-Fi standards: 802.11a, 802.11b, 802.11g. Barcode reader