Despite the good battery life of the Apple Watch, you'll have to charge it. You can use an Apple Watch charging cable. There are 2 things to keep in mind when choosing an Apple Watch charging cable. First, choose which connection you need for your adapter or Apple device. You can choose from USB-A or USB-C connector. The charging cables of Apple Watch come in different lengths. Choose a 0.3-meter charging cable if you want to charge your Apple Watch via your MacBook and don't need a long cord. Are your sockets further away? Choose a 2-meter charging cable.