Result range: 1.1 ~ 33.3 mmol/l (20 ~ 600mg/dl) Test time: 10 seconds analysis Method: Glucose oxidase biosensor Power: 2 cells AAA 1.5V (standard battery not included) Battery glucose unit: mmol/l or mg/dl memory: 256 sets of test results show. include date and time functions: 7-day, 14-day and 28-day average tests can be viewed, often press the power button in the off state! Shutdown: 10 seconds after the last user operation. Host size: 100 x 60 x20mm large screen display 43 x 50mm 1.7 inches Weight: 45 grams (without battery) Operating range: Temperature: 50-104F (10-40C) Relative humidity: 80% Hematocrit: 30%-50% type:B: 25 Test Strips + 25x Needles Colour:Photo Color Material:plastic Package Contents: 1 x host 1 x test pen 25 x test papers 25 x blood collection needles 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.