With the "Display speed" option enabled, the K2 records the current speed within the video.
As the speed is measured by gps, it takes some time from startup till the speed is show. During that phase, the recorded (and shown) speed is simply 000. That´s absolutely ok.
But if the gps reception fails while driving, the K2 simply holds the current speed. This leads to situations where I am e.g waiting at a traffic light, but the K2 still shows "70km/h" in the video. Well...while it is obvious that the recorded speed isn´t correct in this situation, this behaviour of the K2 can cause inconvenience in other situations.
Imaging you are involved in an accident within city limits and the other driver states that you were speeding. Of course you were not. So you take your video as an evidence to proof this, but unfortunately the gps lost gps reception some minutes ago and the speed in the video still shows the speed you were riding some minutes ago on a highway or country road.
So I would suggest to modify this behaviour in a way that the speed is always shown (and recorded) as 000 if the gps looses reception. Regardless of the speed recorded before.