Amazon上有usmile多款口腔护理用品打折，都是黑五价了

usmile Y10 Pro 牙菌斑监测声波电动牙刷套装，现价$74.9(原价$109.99)。随订单赠送4个牙刷替换头，需从点击页面Extra Saving Get 1 item(s) free加入购物车。 https://www.amazon.com/dp/B0CBTZG9F6?
买usmile Y1S 充电式美白声波牙刷同时加购替换刷头，可享替换刷头额外5折
usmile Y1S 充电式美白声波牙刷：https://www.amazon.com/dp/B09D3C34MT? 替换刷头：https://www.amazon.com/gp/product/B0CD121SCV/