Black color Material: rubber, copper clad steel Cable length: 75cm / 3 feet Type a USB connector male to 5.5mm (external), 2.1mm (inside) male coaxial / cap Provides 5V DC from USB Works with any device with DC 5.5mm / 2.1mm USB Adapter The package includes: 5 x USB Power Cable 5.5mm / 2.1mm Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. It is perfectly suited for small electronic devices and devices that use a 5.5mm jack for a power cable (use a DC cap with 5.5mm outside diameter and 2.1mm inside diameter ). 75cm length / 3 feet to meet your needs for long term. Plug and play links with USB A male to DC 5.5mm / 2.1mm Charger Cable for USB lights, USB fans, cartoon clocks, radiator, 5V mini speaker, USB HUB. Note: Pay attention to the connectors please, it is USB type A male to DC 5.5mm / 2.1mm.