Weight 78g, Size 70mmx 50mm, Material Plastics.
Basically copy coupon, view price history or create e-mail price alert. Best price?
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 price update (UTC time):
Banggood
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now…
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGHHGYMK, BGdragonBoat, BGSS10%SW, BGNEWLKZZVV5, BGAFF10OFF, BGSE152, bGhOnEy10, BGHome15%, BGSEPSE152, BGOCFR152, BGHOMEA15%, BGNOFRV152, BgcLuBofErtA10, BGDETD152, BGDETDS152, 13f142, BGCuponation10, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BANGGOODSD
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi HUOHOU Mini Double-Wheel Knife Sharpener [EU] ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi HUOHOU Mini Double-Wheel Knife Sharpener? There we go. The lowest price was: $5.99.
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)).