I would not recommend this test monitor. On four occasions it gave me unusually high readings so I tested myself again. It took four times to confirm the reading and all four readings were massively different. I cought it on four different days that it produced false reading. I spend the whole box of test strips in three days. See the price of test strips and figure. I organised a refund through Amazon and will be buying a different brand. Please beware of this, before you decide to buy it.