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Buy New Kpop Straykidss Lightstick Ver.2 With Bluetooth Support Glow Hand Lamp Party Concert Ver.1 Light Stick Fans Collection Toys at Aliexpress for

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Lightsticks – Kpop Glow US

In BTS concerts or any concert, how do the lightsticks all change color in the same time or make words like “BTS”? I'm genuinely confused on how its managed. - Quora