Specifications:

Range O2 0.0 to 19.9 mg/L; Resolution O2 0.1 mg/L; Accuracy (@25°C) O2 ±1.5% Full Scale; Calibration manual on 2 points (zero and slope); Temperature Compensation automatic from 0 to 30°C; Probe MA840 (included); Environment 0 to 50°C / 32 to 122°F; max RH 95%; Battery Type 9V alkaline (included); Battery Life approximately 70 hours of use; Dimensions 145 x 80 x 40 mm; Weight 220 g (with battery)

MW600 with 2 Caps is supplied complete with MA840 probe, 2 MA841 membranes, 30 ml MA9071 (small size) electrolyte solution, calibration screwdriver, 9V battery and instructions