Color: White, Net weight of the ding-dong: 23.3g, Power input: 5V=2A, Material: ABS material / PCBA / polymer battery / speaker / camera / hardware, Standby time: 2 years or more, Dingtone size L*W*H: 55*42*25 / (including USB: 12mm height), Charging time: 1.5 hours, Intercom type: Colour video, Type: Video Doorbell, Package size 100*35*145 mm, Net weight of doorphone: 65.7g, Record keeping: Three days of permanent rolling storage / 3 days unlimited, Doorbell size L*W*H: 80*53*22, Gross weight: 134.8g, Battery capacity: 800mA, Camera resolution 480*640.
You can create price alert here, copy coupons and view price 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 coupon and price update (UTC):
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!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): Cuponation9, BG00c906, BG589b2e
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Wireless Video Doorbell Camera 2.4GHz? There we go. 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)).