100% and . Input voltage of DC12V, can be installed on motorcycles, cars, ships use. The use of PC environmentally friendly flame retardant high temperature resistant material, high safety factor.The product comes with reverse connection protection and short circuit protection. Black shell, color screen, coupled with exquisite workmanship, making the product look high-end atmosphere. Product design for color, when the product reaches a certain extent, show different colors, more intuitive to see the current battery status. Name: 12V color voltmeter Model: CS-489A1 Product size: product head diameter: 3.7cm, product length: 2.9cm Hole size: 3cm Material: PC Color: black shell Light color: color Input: DC12V Voltage test range: 5-15V (11.3V-11.9V red light; 12.0V-12.5V bright yellow light; 12.6V-15V bright green light) Waterproof grade: IP65 Package Contents: 1 x voltmeter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.