Product size 270 * 110 * 47mm, Cover size 110mm, Net weight 224g, Interface size GB G1 / 2 thread, Name Diiib dechlorinating booster shower.
Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the best price?
Aliexpress
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Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($13.99): BG39fefb
2. ($29.42): Cuponation9
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGSHO07336, 13f142, BGBUYWITHUSDDB, BGCuponation10, BGHONEY2110, BG3d4c6f, BANGGOODSD, ADMITAD2212, 2022ACTIESNL, Terence, 2203ActiesNL, BG1efeb0, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BGFAUCET8, hoNEYbGdeAlS, BGJUNEGSG9, BG456b35, BG716a66
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Diiib Dechlorination Booster Shower Head. The lowest price was: $12.99.
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)).