On Wednesday, May 25, 2016 at 3:27:30 PM UTC+2, wrote:
Am Dienstag, 24. Mai 2016 21:48:04 UTC+2 schrieb 6X:
A nexus tablet can be obtained for very little investment and the tablet communicates with the Nano via blue tooth. Another device to carry / charge but seems to work well.

The Nano IV flyer says it will be "bluetooth compatible" with iOS and Android. Maybe a new app is being made and maybe it will also be compatible with the older versions of the Nano?

Any more info about the Nano IV? Have only seen parts of the flyer in FB, and seen that the screen is 3,5"