Specification:
Color: Black
DCEnd: Female
Inside Diameter: 2.1mm
Outside Diameter: 5.5 mm
USB End: Micro USB 5 Pin Male
Total Length: about 12cm/4.72inch
DCPower Supply 5.5x2.1mm Female to Micro USB 5 Pin Male Charging Cable Adapter.

Package include:
1x Micro USB 5 Pin Male Charging To DC5.5x2.1mm Female Adapter