Cradlepoints battery-powered Personal Hotspot lets you set up a Wi-Fi router anywhere you can use a 3G cellular modem... you dont even need a power outlet! The router can keep multiple 802.11b/g computers connected to the Internet using a single EVDO device. With full security features and access controls, the Wi-Fi router can be used for field meetings, emergency situations, convention blogging, picnics, camping and more. Includes AC adapter. Requires compatible USB 3G cellular modem, or compatible ExpressCard modem and USB adapter. See the following compatibility list. Verizon Data Devices: USB720, USB727, AC595U, UM150, V640, V740, KPC680 Verizon Cellular Phones: LG VX7200, VX8000, Motorola V3c RAZR, RIM Blackberry 8703e/8830 Sprint Data Devices: U720, U727, AC595U, EX720, Franklin CDU680 Sprint Cellular Phones: Samsung A920 & i830, Sanyo M1 & Katana 2, Motorola V3c RAZR, RIM Blackberry 8703e & 8830, LG Musiq Alltel Data Devices: KPC680 Some devices will require a firmware update. ExpressCard modems will require a USB adapter. Please note, does not support AC597E ExpressCards. # 802.11b/g router # 1800mAh Li-Ion battery # WEP, WPA, WPA2 & WPA2-PSK encryption # Supports VPN connections Specifications Measurements: 4 7/8"L x 2 7/8"W x 5/8"H