Keychain data cable $ 4.26 Length: 0.2M Applicable models: Apple Number of branch connectors: single head Standard current: 1.5A maximum 2A Function: charging + data transmission Wire core specifications: charging 300.08 data 160.08 The main purpose: It can be used on car chargers with USB ports; It can be used to charge the data port on the mobile phone; It can be used for charging and data transmission after connecting to a PC; Key key chain: can be trailer key, household key.