Light source LED, Working time Strong light – 4 hours; low light – 24 hours, Power 4.5W, Rated voltage 5V, Product weight 183g, Color temperature 4000K, Material ABS, Battery capacity 1800mAh, Brand Baseus, Luminous flux >100lm, Color Gray, Name Baseus Magnetic Stepless Dimming Charging Desk Lamp.
Just check coupons out (with price alert and history). You probably want to know what is the 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. There is one great coupon!
Link: Banggood product page
1. ($27.02): BG00c906
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGBas867, BGHONEY2110, BGAPTD867, BGAPDEAL67, BGAODEAL867, BG10OFFAFF, BGZD867, BGAPSEV867, BGDEBAS, BGGR867, BGMAYTD87, BGNEBA867, BGwhielabel, BGMU867, BGJUFR867, BGBASJU, BGMAYTD867, BGJUSE867, BGLQYR3, BGJUTD867, BGbrly867, BGISD867, BGLYDC7, BGPDhome43, BGPEDL867, BGGEBA67, BGLYTD867, BGISJU867, BGBR867, BGLIG12, BGTYOD867, BGSPHOME32, BGTYSY867, BGTYOU867, BGUdb41, BGUbf36, BGPA867, BGPU867, Terence, BGbd489b, BGLED2203, BGfd1191, Cuponation9, BGLED07
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Baseus LED Magnetic Desk Lamp. The lowest price was: $12.99.
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)).