A wrist-worn electronic device includes a side wall formed of electrically nonconductive material, a printed circuit board, a communication element, a bezel, and a first antenna. The communication element is configured to transmit to or receive a first electronic signal to communicate with another electronic device or a communication network. The bezel is formed of electrically conductive material, positioned above the nonconductive side wall, such that a nonconductive slot is formed between the bezel, a perimeter of the printed circuit board, and electrical connections to two of the electrical ground terminals on the printed circuit board. The first antenna is formed at least partially by an upper portion corresponding to a circumference of the bezel between the two electrical ground terminal and configured to wirelessly transmit or receive the first electronic signal and communicate the first electronic signal to or from the communication element.