Display unit: MG or DL or mmol or L dual units switchable Measuring range: 20-600mg or dLto1, 1-333mmol or l High-: accurate test results and stable readings, helping you obtain accurate hemoglobin levels and effectively monitor and manage status. Screen: LCD Storage: 180 memory groups Measurement time: less than 7 seconds Application: Time and Date Automatic shutdown: no operation for 3 minutes Working temperature: and10C to and40 percent C Storage temperature: and4C to and32C Power supply: 2 AAA batteries, approximately 1000 measurements Sample type: capillary blood or venous blood Hematocrit range: 20 percent -60 percent Less than 85 percent Material: plastic colour: As Shown Package Contents: 1 x instrument 50 x test paper 50 x piece needle 50 x alcohol cotton pads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.