Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
Lens 5mm tempered glass, Waterproof depth 100m, Battery 18650 rechargeable lithium ion battery pack, Endurance Warm white fill light high brightness 55min / medium brightness 120min / white spotlight 300min / red light 240min / UV light 240min, Land weight 515g, Light source 1x warm white COB LED (5000-5500K / colour rendering index 95) + 4x red LEDs + 3x UV light + 1x white spot LED (colour temperature 6500K), Output angle 110° photographic fill + 16° central angle spotlight, Maximum brightness 6000lm, Dimensions Head diameter 57mm / body diameter 49.7mm / length 131mm, Weight in water 280g
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($515.55): BANGGOODSD
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGHONEY2110, BG10OFFAFF, BGwhielabel, 4BLF, BG10OFFAFF1
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for ARCHON DM20-II 6000lm Diving Flashlight.
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)).