OSD Pro Expander （OSD PRO エクスペンダー）

The OSD Pro is the ultimate on-screen display for your FPV (First Person View) equipped recreational model airplane, heli, car or boat! The OSD Pro displays all the key information about your model’s status, and has many advanced features such as voice alerts, high resolution raster graphics, a new “RADAR” synthetic map, “Return to Home,” Artifical Horizon display, Acoustic Variometer, and waypoints within visual range.

OSD PRO 説明書（英語）.

OSD PRO クウィックスタートガイド（英語）.