Feature: 1. 5 IN 1 MULTI FUNCTION: Realize simple and fast test water quality of EC, TDS, SG, salinity and temperature 2. ACCURATE PROBES: Possess high performance and reliability for accurate results and fast measurements 3. WITH BACKLIGHT: LCD digital water quality tester with white backlight, easy to read test data, clear and convenient 4. WIDE RANGE OF USES: Can be used in fishing, aquaculture, laboratory drinking water quality testing, swimming pools, aquariums, etc. 5. SCRATCH RESISTANT ABS: Using excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly Specification: Item Type: Water Quality Meter Product Size: Approx. 15.5 x 3 x 1.5cm / 6.1 x 1.2 x 0.6in Range: EC: 0-19990us/cm; 0-199.0ms/cm TDS: 0-9990ppm 0-199.0ppt Salt: 0-199.9ppt 0%-20.0% S.G: 1.000-1.400 Temperature: 0℃-50℃ (32℉-122℉) Battery: 1 x 3V CR2032 button battery(not include) Temperature Compensation: 0℃~50℃ Working Temperature: 0℃~50℃ Wide Range of Uses: Can be used in fishery, aquaculture, laboratory drinking water quality testing, swimming pools, aquariums, etc. Material: ABS Weight: 67 g / 2.4 oz(approx.). Package List: 1 x Water Quality Meter1 x User Manual