Resolution Ratio 4K, Sensor Technology CMOS, Charging Voltage DC-5V/1A, APP Support Android/iOS, Storage Type Removable (Card/Disc/Tape), Memory Card Type MicroSD/TF, High Definition Support 4K, Storage Micro SD card / Max support 128GB, Recording Definition Ultra High Definition, Battery type Built-in rechargeable polymer lithium battery, Video Format ASF, Player Software VLC Player/SMPlayer, Size 44x24x44mm/1.73×0.94×1.73in, Material ABS, Built-in Memory Size Non.
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China. We have found one coupon for this product!
Link: Banggood product page
1. ($6.99): BGe1f246
coupon code has to be applied in shop’s 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): BGxip564, 13f142, BGTYOC564, BGISOC564, BGTYC564, BGISC564, BGISOD564, BGSP564, BGISSP564, BGSPHOME62, BGTYSY564, BANGGOODSD, BGPOS564, BGUdb25, BG00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, 8Couponsde, MVC8SPRING, 8BGwbg2204, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, BGJUNEGSG9, Cuponation9, BGca595e, BG589b2e
(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 A9 4K Wifi Mini Hidden Camera. The lowest price was: $6.99.
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)).