TechRadar describes Nomad's Universal Cable for Apple Watch as a braided USB-C lead with a watch charging puck built near one end. It can charge a compatible USB-C device and watch together from suitable power hardware. The design targets fewer separate leads during travel or desk charging.

Check the actual device's charging limit rather than expecting the cable's maximum rating. Data transfer remains at USB 2.0 speed. Leave both devices supported near the integrated end so the combined lead does not create tension on a phone, laptop or watch.