LED Meter Display for load Voltage with accuracy ?.0% of rdg -LED Lighting more accurately for the STATUS of BATTERY. -PIC CONTROLING (CPU & software inside) for Selecting BATTERY CAPACITER varied 300,400,500,600,700,800,900,999 CCA etc. with an additional push button to set it up -Self-check errors on LED Meter display -Automatically Power turn-off after 10 seconds with another one-touch push button to set it up -Buzzer beeping for Caution of the critical status of battery capacity -Fixed Current Load: 100 amps -BATTERY CAPACITY SCOPE: 300 TO 1000 CCA(1000Ah) -Battery Test: 12-volt only -Charging Voltage: 16V max -Dimensions & Weight: 285(L)*110(W)*70(H)mm, 1.5kgs approx