Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Battery: 7.4V 600mAh LiPo, Working time: about 8mins, Charging time: 120 – 140mins, Control distance: 150m
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Price history and price alert
Do you need price history chart (for all/most countries) for JJRC S3 Water Cooling RC Boat? There we go.
Price records source(s): Gearbest
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)).