Hm Mp4 — Heidymodel 720

Tap the Power/Mode button briefly to cycle through: Video Mode (default) Photo Mode Playback Mode (for viewing saved MP4 files) Settings Menu 3. Recording & File Management

Try formatting the MicroSD card directly within the device's settings menu. HEIDYMODEL 720 HM mp4

Press and hold the Power/Mode button (usually on the front or top) for 3 seconds. Tap the Power/Mode button briefly to cycle through: