CPU MT6737 Quad Core, ROM 32GB, RAM 3GB, Display Resolution 854×480, Size 3.0 inch HD, OS Android 7.0.
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 and price update (UTC):
Banggood
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood.
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): BGS10129, aff7off, BGTT10, bGhOnEy10, BGdragonBoat, BGSS10%SW, BGAFF10OFF, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGJP8905, BGCuponation10, 13f142, BGHONEY2110, BGJP0737
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for SERVO S10 Pro IP68 3/32GB Smartphone is here. The lowest price was: $119.99.
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)).