1. An electronic device, comprising:a housing having a first recess;
a touch-sensitive display mounted in the housing;
an attachment member configured to attach the housing to a user;
a coupling structure that couples the attachment member to the housing, wherein the coupling structure allows the attachment member to be removed from and reattached to the housing, and wherein the coupling structure comprises a protruding portion that mates with the first recess in the housing; and
a spring-loaded pin that retains the protruding portion in the first recess by expanding into a second recess that is different from the first recess.