Charging time 3H, Rated energy 118WH, Battery capacity 6400mah/6.4AH, Charging current 3a, Product name Underwater scooter, Plug EU & US, Voltage 18.5V, Model Flying Fish I, Host size 268*87*88mm/10.5*3.43*3.46in, Endurance time Continuous 23 minutes at maximum throttle / 45 minutes in normal use, Host weight 1.5kg/3.3lbs, Main engine thrust 5kgf.
Price history, coupons and price alert are available on this page. 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.
Link: Banggood product page
1. ($505.99): BG8OFFCOUPON
2. ($505.99): TTBLACK5
3. ($516.99): BG00c906
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BG6be367, BGa61f2e, BG369949, BGissam389, BGissam15wts, BGc363fd
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for 2Pcs DCCMS Underwater Scooter Set? There we go. The lowest price was: $357.49.
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)).