This desk lamp has 3 levels of brightness that can be adjusted and switched at will.
the universal hose can be adjusted at any angle 360°.
the rechargable battery can be connected to the computer, mobile power phone charger and power bank ect, charging and plugging.
specification:
Voltage: 5v
Rated power:2.5W
Material: ABS/LED
Color temprature: 3000-6000k
Battery specification:lithium battery 186650 battery -3.7V
Smart button: lightly press the switch to turn on the lamp, long press the switch to adjust the brightness
Color: white/warm white/natural light
Applicable places: for work and study
Power supply: USB data cable
Package includes
1* Table lamp 
1* USB charging cable