An electronic device (50, fig. 4) has a male connection portion 38 for connection with a low-profile female snap. The male connection portion comprises a conductive stud 38 including a head and a threaded portion. The stud 38 is in electrical contact with the electronic device, and is screwed in to the housing (51, fig. 4) of the electronic device via the threading on the stud 38. An adhesive may be added to provide a secure and water tight seal between the stud and the electronic device. The head may have a cavity/recess 42 for receiving a tool for screwing the stud 38 in to the electronic device and/or for receiving a guiding pin 22 of the female snap portion. The stud makes an electrical connection between a conductive portion of the female snap and an electronic component 76 within the electronic device. The electronic device may be a heart rate monitor transmitter, where the male connection pin 38 detachably connects the transmitter housing to a female snap on a belt or article of clothing. For example the popper fastening may provide mechanical and electrical connection between an electrode 24 on the belt/garment and the heart rate transmitter.
