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Since it works by analyzing the light bouncing off your skin it is subject to many false readings. You can put it on different fingers and simply adjust the position of it and get a radically different reading. It is not cheap Chinese junk. It is just Chinese. So buy one before they lower their production standards and start making junk with the usual bait-and-switch the Chinese do.
Verified purchase: Yes | Condition: New
it worked for only three days . I in stalled new batteries . batteries were at 1.50 volts . it worked when I put the fresh batteries in when it was out of the package. the batteries were at 1.50 volts . when I tossed it batteries were1.50 volts / never used it but one time .
Verified purchase: Yes | Condition: New
easy to use,,but when compared to doctors meter at his office;; mine read 2 points lower . good value, nice to store
Verified purchase: Yes | Condition: New
For the money, it's surprisingly decent. Takes a bit of practice to learn how to get it to give reliable readings. On the unit we have, it either gives a good reading, or a ridiculous reading that lets you know to try again. Worth having.
Verified purchase: Yes | Condition: New
was very dissappointed , compared with another one it doesn't work right tryed changing batteries still no better but i'm not one to return items ,so we learn from our mistakes hope everyone else has better luck with this product.
Verified purchase: Yes | Condition: New