Check the listing for details. 12V 12 Volt Marine Trolling Motor Battery Indicator Status Power Meter - HEX. Condition: New. Listed at 20.99 USD. LED Battery Indicator 12V - HEX Shaped(Please note this GIF Shows the Rectangular model but you are purchase the HEX model)Never let your electric equipment run out of power again. This battery indicator is designed to monitor the voltage charge on your battery powered equipment.100% Brand New & High QualityEasy to Follow Pictured Instructions IncludedColored LED Indicator StatusColor: BlackWater Resistant10 LED Bar DisplayOperating Voltage: 12/24 VoltBattery Indicator Levels Explained: The battery indicator has 10 colored LED's that will display the batteries voltage charge. Only 1 LED will be illuminated at a time to converse the power draw. When your batteries are fully charged, the far left LED will illuminate green. As the batteries voltage drops from use, the LEDS in the 4 thru 9 position will illuminate. All of the 9th-4th LED's are Green as shown the the flashing graphic above. Once the batteries voltage drops significantly the battery indicator switches to a Yellow LED cautioning there is approximately 30% of the batteries voltage left, This should be your warning for low voltage. When the batteries voltage is discharged to around 20% remaining, the 2nd LED from the left will illuminate as a flashing Yellow LED. Finally, hen the battery voltage drops to 10% or less, the 1st and 2nd LED will start to flash Red and Yellow LED.Dimensions:Outside Measurements: Width 2 1/16" ; Height 1 1/4"Hole cutout needed on dash - 1 3/8" by 7/8"