... batteries Ultra-bright, TFT, color touch screen display Topcon's FC-250 - The compact controller for big-time results DesignUltra- ... Shock Resistance, 1 meter drop resistant Compact, Ruggedized DesignThe FC-250 field controller incorporates Windows Mobile® 6.5 operating system ... charged externally as backup.Built-in Bluetooth and WiFi The FC-250 has built-in Bluetooth® wireless technology and WiFi. ...