Color White, Battery Life 6 Hours, Connection WiFi/USB Network, Motion Optical Sensor, Size 72*51*68mm, Weight 110g, Required System Android/iOS/Windows/Mac OS/Linux.
Just check coupons out (with price alert and history). What is 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 Europe 
. This is new product in my database, so I don’t know if this price is good.
Link: Banggood product page
1. ($143.51): 8Couponsde
2. ($143.51): MVC8SPRING
3. ($143.51): 8BGwbg2204
4. ($145.07): 2203ActiesNL
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): BG54ac31, Terence, Tabby20, BG1efeb0
(these coupons are old, so probably won’t work)
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: $39.99.
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)).