Abstract: Technology for measuring and supporting physical activity or sports performance in actual field use requires that the physical instrumentation operate with minimal hindrance to the users performance. Power must flow securely and without interruption between any active-use device (whether sensor(s), or display(s)) and a power supply; and the physical connector effecting such power flow must stay secure against anticipated, ordinary, physical stresses from its user's activity (i.e. sports performance). This invention details a physical connector, specifically a connection clip, that is secure against unidimensional or randomly combined motion(s) yet responsive to specific, orthogonally-dimensioned, deliberate and controlled affixation and release motions, that effects such a secure physical connection.

Abstract: Watchmakers have maintained a tidy, fiddling, monopoly on changing watch straps for a century even as customers have increasingly sought and asked for more readily-replaceable options, to let their expensive centerpiece display (whether mechanical or electronic) to be attached by fashion-responsive, inexpensive straps. This invention is of a strap for a variety of displays or equipment worn on the user's wrist, limb, or body that is simpler to manufacture, sturdier, easy to use, and yet readily replaceable without any tool. This invention enables the strap itself to become a separable element for differing needs including those suitable for changing seasons, special events or situations, purely of fashion, or simply for expressing personal taste, feeling, preference, or opinion.

Abstract: Technology for supporting personal sports performance moves from laboratory to field use only as and if instrumentation is designed both to meet its specific function(s) and to least hinder the athlete's performance. Even a standard wristwatch degrades an athlete's optimal motions when an athlete reads it while training or competing. This invention details a casing and strap (more specifically said casing's and strap's interacting shapes' and attachments' form, lie, and linkage), and controls, for a display for monitoring/sensory and/or feedback/reporting sports instrumentation, which meet both the sports instrumentation's and athlete's functional needs, as the casing and strap place the display and control diagonally across yet flush with the athlete's forearm.