1Easy to use, only 1 drop of sample is needed, can easily test TDS/Brix. 2Easy calibration and operation, it can be operated with one hand. 3Portable and exquisite, low power consumption, anti-loss design. 4 High accurate measurement, the resolution is 0.1 and high accurate sensor. It can measure Brix value andWort SG. 5 Using linear CMOS sensor with high precision, IP65 waterproof protection level high-performance and anti-shock material. 6 Low power consumption,with 10-50 C automatic temperature compensation function. Condition: 100% Item Type: Beer HydrometerMaterial: ABSColor: As shown in the pictureWeight: Approx.341g/12ozBattery:1 x AAA 9v battery(Not included)Waterproof Rate: IP65Automatic Temperature Compensation (ATC): 10-50 CMeasurement Time: Approximately 1.5 secondsMinimum Sample Volume: 2metricdropsLight Source: Yellow LEDSample Cell: Stainless steel ring andflintglass prismBattery Life: 5000 readingsAuto-Off: After 3 minutes of non-use Beer Hydrometer Measuring Sequence Measuring Sequence Resolution Accuracy Brix s01 0~50% 0.1 +-2% Wort SG s02 1~1.130sg 0.001sg +-0.002 Instruction: 1. Press key READ 1 second only.2. Determine the test concentration range3. Press keyREAD 1 second, meter will give the current value, if press keyREAD 2 seconds more, meter will make and countdown 15 times measurements, the reading is the average value.4. Press key SCALE more than 2 seconds,meter will display Celsius or Fahrenheit.5. No need calibration every time. Drip 3~5 drops of distilled water on the sample plate to ensure the water and meter temperature are the same, the standard temperature is 20 C, and then cover.Press "CAL" for more than 2 seconds until "CAL" flashes. Press "CAL" again and the meter will display "END" and display 0.0%.6. Meter will power off within one minute if no any operation.