It's the abbreviation for Mean Corpuscular Hemoglobin. This is a measure for how much hemoglobin per red blood cell count. MCH stands for Mean Corpuscular Hemoglobin. It is a measure of the average amount of hemoglobin in each red blood cell. 9 people found this useful.
Human Interface Device (HID) Definition - What does Human Interface Device (HID) mean? A human interface device (HID) is a method by which a human interacts with an electronic information system either by inputting data or providing output. A myriad of HID devices exist. The most common are the keyboards, mice, computer speakers, webcams and headsets.
All Fitbit trackers are water-resistant, which means they are rain-proof and splash-proof and can stand up to even the sweatiest workout. Do not swim or shower with your tracker unless noted below: The Fitbit Flex 2 is swim and shower proof. The Fitbit Alta is shower proof.