UCI PORTABLE ULTRASONIC MICROHARDNESS TESTER BRAND: SINOWON REFERENCE: SU-300H PERFECT ACCURACY: 3% HV, ±1.5HR, ±3%HB; MICROSCOPIC INDENTATION: ONLY A HIGH-POWERED MICROSCOPE CAN OBSERVE INDENTATION; QUICK MEASUREMENT: RESULT IN 2 SECONDS; LARGE LCD DISPLAY: DIRECTLY DISPLAY THE MEASUREMENT RESULT, TIMES COUNT, MAXIMUM, MINIMUM, AVERAGE AND DEVIATION; FRIENDLY OPERATION: OPERATE WELL AFTER SHORT TRAINING; PROMISED WARRANTY: 2-YEAR WARRANTY FOR MAIN UNIT (EXCLUDES PROBE); MASS STORAGE: SAVES MEASUREMENT DATA OF 1000 GROUPS; SIMPLE CALIBRATION: SAVE 20 GROUPS OF CALIBRATION DATA TO INVOKE, IMPROVE CALIBRATION EFFICIENCY. SPECIFICATIONS VICKERS HARDNESS SCALES(HV); ROCKWELL C(HRC); ROCKWELL A(HRA); ROCKWELL B(HRB); BRINELL(HB) LCD COLOR SCREEN DATA DISPLAY LCD BACKLIGHT, ADJUSTABLE LANGUAGE ENGLISH, GERMAN, PORTUGUESE, CHINESE, TURKISH DATA OUTPUT HYPER TERMINAL RS232/BLUETOOTH PRINTER PRINT BLUETOOTH DATA STORAGE TO SAVE 1000 GROUPS OF MEASUREMENT DATA AND 20 GROUPS OF CALIBRATION DATA WORD ENTRY LETTERS AND NUMERALS WORKING ENVIRONMENT TEMPERATURE: -10°C TO 50°C HUMIDITY: 30%-80% RH BATTERY VOLTAGE RECHARGEABLE LITHIUM BATTERY; VOLTAGE: 4.2V, 4800MAH CHARGER VOLTAGE AC220V/50HZ, 110V/60HZ MAIN UNIT DIMENSION AND WEIGHT MAIN UNIT DIMENSION: 160 X 80 X 30 MM (L X W X H); HAND PROBE: