Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Voltage: DC 5V, #2: Battery capacity: 15000Mah(Optional), Optional Battery Capacity: 6000mAh/15000mAh, Charging Interface: Type-C Interface, DB: ＜80dB, Material: ABS PP, 2-Gear Using Time: 0.35H/0.8H, Charging Time: 4H/7H, 1-Gear Using Time: 0.5H/1H, Size: 20.5x 7.5x 13 cm/8.07″x 2.95″x 5.12″, Wind Speed: 70m/s, Power: 60W, Motor Speed: 45000 RPM
Aliexpress
There’re some similar (or not) items on Aliexpress
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. Hmmm… There is no active coupon in Banggood at this moment.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG107e34, BGherra, BGd4cc01, BG1826306, BGba1a31, BG0a3e9b, BGPL39971, BG7bf3cf, BG39bdee, BG60c2a2, BGa632e3, BGd3085c, BG9892a1, BG1006c, BANGGOODSD, BGe27fd1, 6GSGIT, BG8a7644, 00c906, BGdbc95b
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Cordless Keyboard Cleaner Air Duster 15000mAh [EU] ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for Cordless Keyboard Cleaner Air Duster 15000mAh.
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)).