Here's how to set the date and time caption on the 10C:
1. Pair the 10C to your iPhone or Android smartphone.
2. Start the Sena Smartphone App
3. Tap the "Basic Settings" icon.
4. Scroll down till you see "Date Caption" to make sure that is set to "On".
5. Turn the camera on the 10C on by tapping the Camera Button once.
6. The items in the "Basic Settings" menu should grey out and then return to normal. On Android, you may see a message that indicates the date and time are synced with the phone.