Oh, and the screen on the 310HS always goes dark when you are "talking" to it, with the green light on the bottom right either solid green or blinking - I'm pretty sure it turns itself to that mode whatever you do.
Oh, and the screen on the 310HS always goes dark when you are "talking" to it, with the green light on the bottom right either solid green or blinking - I'm pretty sure it turns itself to that mode whatever you do.