GREEMPIRE 4W LED Desk Lamp Rechargeable Table lamp Foldable with LCD Screen, 5V/0.5A USB Charging, 3 Lighting Mode Dimmable, Touch Control, Built-In Clock, Calendar, Thermometer and Eye Care, White
Luminous flux: 250lm
Color rendering index:>80
Voltage: 4.0W
Life-span: 20000 hours
Color temperature: 3750~4250k
Numbers of LED Bulbs: 18
Battery: Built-in Rechargeable 1200mAH lithium battery
Charging time: 4 hours