Abstract: A wearable electronic device holder having a retention member for retaining an electronic device, such as a smartwatch or an MP3 player, and a wrist strap attached to the retention member is disclosed. The retention member includes a protective frame comprising one or more covers or openings for receiving and allowing interaction with one or more buttons, knobs, and/or ports of the electronic device. At least one of the covers is configured to enable the dual-action functionality of a knob of the electronic device. The protective frame may also include an opening adapted to receive sound-permeable, waterproof inserts for an audio port of the electronic device. The protective frame further includes fastening holes for attachment to the wrist strap. The protective frame may be a two-piece frame that partially encloses the electronic device.

Abstract: The present invention concerns a mechanical oscillator, comprising an oscillating system comprising a balance (1) and its return spring (3). This oscillator also comprises two elastic strips (9, 10) fixed by one end and acting in opposition intermittently by their other end on a connecting organ (8) secured to the oscillating system.