We are an official store. 100% genuine product with full warranty. 1: Please note that the maximum number of lights that can be connected depends on your phone. Android phones can connect 4-6 lights, while Apple phones can connect 8-12 lights. However, many users have reported that Samsung and Google phones can only connect up to 3 lights. 2: You can search for ReactionX on the Google Store and download it; the app is free. 3: Tax issue: Our product prices do not include taxes, and buyers need to pay taxes themselves. If you have any further questions, please contact the store's customer service.

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