I test this place for 15 days and happiness. For starters, arrived in due time in perfect condition, I tested the product immediately. So certainly if you plan to add sound to a room or a train station, forget, but for a small room from 20 to 40 m2 that is enough, at least for me. For recognition, no problem, that's even super fast, barely lit and my phone connects to it. I aodre light effects, they are varied, numerous. For autonomy, no more than 8 hours with the activated effects. The app is nice, pity she starts an hour to find the enclosure, but hey, no one passes there ca life. In short, I do not regret, very friendly.