... one is sd format, it just can be read by our software, the other is avi format, we ... can use common player to read.11.Have Speed Meter & Volume,Direction ,Latitude & ... software player.MicrophoneHigh Sensitivity Microphone.Time SetupAuto-calibrating by GPS signals. If GPS is not available, ... Notice(a) GPS positioning speed will be affected by weather, window films, etc.(b) Window film ...