Magnetic levitation: max frequency of 40000rpm, the max twisting force of 270gf.cm, the max swing of 5.5mm, Charging time: full of 6 hours, Battery life: 60 days, Battery capacity: 2600mAh, Waterproof Rate: IPX7.
You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. There are no coupons for this product in Banggood. I don’t want to misguide you about the price. I don’t know if it’s good, because I don’t have enough records in my database…
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): ploclean, e2bcea, vipupgrade8, TTxBG10, BGOCSE0, BGOCSESEP, AFfbG10, 502C6B, BGBFAFF2019, BGCITYADS2019, BGVDay10%off, BGMPB2020, BGAFF10OFF, bGhOnEy10, BGbeauty001, bgshOOp10, BGHB20, BgoFErTaSchInA10, BGSD58965, BgcLuBofErtA10, BGSE4999, 7d18f7, BGHBHJ107, BG84810, BGCuponation10, BG22371, BG10OFFAFF, BGwhielabel, BGaff0603, BGjune09, BGjune014, BG75597c
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Xiaomi Oclean SE Sonic Toothbrush ($-3)
2. China – Xiaomi Oclean SE Sonic Toothbrush Blue ($-3)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $52.99.
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)).