Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. One touch calibration * Long Battery life (approx. 5,000 hours) * Comfortable hand-held design * Impact resistant and drip proof * Large LCD with 3 digit display * 2 year warranty on both analyzer and sensor * Measurement range: 0-100% * Resolution: 0.1% Oxygen * Display range: 0.0 to 99.9% oxygen * Weight: 4 ounces * Response time: 90% of final value in less than 15 seconds * Accuracy and linearity: 1% of full scale constant temperature, R.H. and pressure when calibrated at full scale * No warm up time required * Low battery indication on LCD displayed as BAT * Sensor type: Check and go galvanic fuel cell * Dimensions: 3.0inches W x 4.0 inchesH x 1.5inchesD * Power requirements: 2 AA Alkaline Batteries *