The output of the charging head is a USB port, which is mainly for regulating the power supply, providing stable working voltage and enough current to charge electronic devices. This charging head is more compact and convenient, easy to put into a small carry-on bag, and perfect for carrying on the go. Nickel-plated process, stable transmission, after thousands of plugging and unplugging test, still durable. The product is widely used in smartphones, tablets, communication devices, digital Novolinepromo.com/products.html target='_blank'>products, instruments, etc., and can be customized according to customer requirements logo. chip upgrades, each process is strictly controlled, charging safer.