Abstract: A heart rate monitor may include a strap and a heart rate monitoring pod releasably coupled to the strap. A securement element may be disposed in the strap to selectively secure the pod to the strap. The pod may be selectively removable from the securement element and include one or more charger contacts. The pod may include one or more LEDs and/or vibrating elements to provide a light animation feedback and/or a haptic feedback to a user. A charger may be provided to charge the pod. The charger and pod may have complementary shapes to align the pod on the charger. For example, placement of the pod on the charger may align the charger contacts of the pod with one or more charging elements (e.g., pins) disposed in the charger.

Abstract: An external fan is mounted on a chassis and includes a retaining stage and a ceramic axis. The retaining stage is arranged on one external side of the chassis and includes a base and a hollow rod erecting on the base. A stator is arranged outside the hollow rod. The ceramic axis passes into the hollow rod and includes a first end connected to a rotator wrapped outside the stator and a second end extending out of a bottom of the base and connected to a blade inside the chassis.