SAN102 Personal Oxygen Meter

this product is very cheaply made I purchased three in the last month and all three of them were defective in that where you put in the charger from the USB port you put in the amount of pressure when you’re pushing the cord into the charge area and it snaps off and therefore you’re unable to use the product once the battery goes dead I thought initially maybe a push too hard on the first one so I was very gentle the second and the third time and each time it simply snapped off from the inside Horrible product stay away from it