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High-density DuPont nylon bristle material, Vibration frequency of 31000 times per minute, IPX7 waterproof level, Battery: 800mAh Li-ion battery 3.7V / 1.8W, Waterproof rate: IPX7
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Price history and price alert
Price history (for all/most countries) for Alfawise S200 Sonic Toothbrush is here.
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)).