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Power Output: 40W, WiFi Standard: 802.11b/g/n, Freq: 80Hz-20KHz, S/N: More than 85dB
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Price history and price alert
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Price records source(s): Gearbest
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You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).