Has good electrical conductivity, has the characteristics of long use time and not easy to damage. Suitable for many occasions: digital products, remote controls, toys, communication products, household products, computer products, security monitors, audio-visual digital products and other fields. The socket has the characteristics of environmental protection and flame retardant. Product material: Nickel plated outer layer, not easy to oxidize. Scope of application: widely used in car audio, video communications, cassette recorders, stereos, telephones, etc. Colour:Black Material:Plastic Package Contents: 1 * DC2.1 charging port set Only the above package content, other products are not included. Note: Light reflection 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.