Oumeiou Book Light, 3000k LED Clip on Reading Light with 4-Level Warm White Brightness, USB Rechargeable Lightweight Eye Care Lamp for Bookworms, Kids

Specification:
LED Quantity: 4
Item Weight: 70g
Item Size: 9.25*2.3*0.5 in
Color Temperature: 2800K
Charging Time: 1 hour
Lumen: 8~40 (4 level)
Lighting Duration(Max):
Level 1 Soft: 20H/ 8Lm
Level 2 Bright: 8H/ 20Lm
Level 3 Brighter: 5H/ 30Lm
Level 4 Bright: 3.5H/ 40Lm

Note: 1.When it goes dim please don't forget to charge it, you can plug it into your power bank, laptop, socket usb interface.
Just 1 hour will be fully charged.
2.If you have any question, please feel free to contact us, we will do our best to help you!