to whom it may concern

Despite popular opinion, pucks v3 don't really hold on the charge like knuckles do. I got my v3, charged them fully, charged knuckles fully, went into game, knuckles were still 2 bars of battery when first tracker died (and other ones were also very low). I don't know much about pucks v2, but if you have to wear powerbank on you for longer sessions anyway, i'm not sure if it makes any sense to take more expensive v3 over v2. Then again, $20 isn't all that much of a difference.