Hi, An important feature which is lacked on action cameras of SJCam. It is notification sound. It would be great when we press the record button or when we stop recording, a notification sound/voice plays. Example, when recording it says "Recording" and when stopped it says "Stopped". Those who are using head strap (particularly with remote control), where they cannot double check if the camera is recording or has stopped, this feature will be benefit to avoid removing the camera from our head each time to verify. I use SJ6 Legend but I think this feature applies on all the models.