Noise value: lower than75dB, Water Tank Capacity: 230ml, Feature: Portable Oral Irrigator, Type: Water Flosser, Charging time: 4-6h, Model Number: SOOCAS W3, standard, Working Modes: gentle, Type: Electric Oral Irrigator, Power Source: Rechargeable Battery, Suitable user: above 13 years old, Age Group: Adults, Battery capacity: 2200mAh lithium battery, Charging Method: USB charging, pulse massage, Item Type: Oral Irrigator, ce, Feature 1: Electric Oral Irrigator, Material: FDA certificated ABS nozzle + food-grade PC body, Commodity Quality Certification: 3C.
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Updated:
Banggood
Warehouse in China.
Link: Xiaomi Soocas W3 Oral Irrigator
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons:
1. First page
2. Second page
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Soocas W3 Oral Irrigator [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for Xiaomi Soocas W3 Oral Irrigator is here. The lowest price was: $28.88.
Price records source(s): Banggood
Click on image to enlarge. 
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)).