The watch and smartphone can be charged simultaneously thanks to the integrated cable design that resembles a hanging rope, and the dual-purpose mobile power source makes traveling easier. With a phone stand in addition to a portable power source, you can free your hands whenever and wherever you choose. Maximum watch output: 3W. Mobile output: 12V = 1.67A 20W (Max); 9V = 2.2A; 5V = 3A. 5V=3A, 9V=2A, and 12V=1.5A/18W (max) are type-C inputs. Type-C output: 12V 1.67A 20W (max); 9V -2.2A; 5V=3A.