for any stays wondering if their v1 lightstick will for work the skz concert next year — it will NOT. you MUST have a v2 lightstick to be able to do bluetooth, concert effects etc. so if you already have a v1 or thinking about buying a ver. 1 because it’s cheaper, you either will be wasting money or it would be too late to get a v2 unless you get one at the venue — the venue will ONLY sell v2 because it’s the most recent and compatible lightstick — get a v2 and save yourself the trouble