Just check coupons out (with price alert and history). Do you want to know what the best price is?
Waterproof IPX4, The farthest irradiation distance 50m, Anti-fall height 1m, 3.7V, Material Aluminum, component 420J2, Weight 73g, Torch mode High light-low light (65lm-9lm), 0.888wh), Charging Type-C (full charge time is about 1.5h), Battery Built-in 701235 polymer battery (240mAh, Life time 1.5-10h, Size 141.8×15.4×18.7mm
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Coupons for NEXTOOL N1 Multifunction Pen Flashlight? Nope, there’re no coupons 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!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BgoFErTaSchInA10, BGXMNT05, M8503, BgcLuBofErtA10, BGFLS15, BGAFF10OFF, BGCuponation10
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for NEXTOOL N1 Multifunction Pen 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)).