Color Temperature: 3800K, Battery: 1800mAh, Control Mode: Touch Control, CRI: Ra80, Item Type: Table Light, Size: 150mm*380mm (D*H), Material: ABS, Light Source: LED, Brand Name: OPPLE, Power: 5W, Is Dimmable: Yes, Working Time: 70 Hours.
Just check coupons out (with price alert and history). 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 price update (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($55.21): 13f142
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): BGLIGHT2020, BGTT10, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGLIGHT0920, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Opple LED Rechargeable Desk Table Lamp. The lowest price was: $43.99.
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)).