The battery testers to diagnose the batteries of car, etc. For beginners, it helps to know the changing to find the battery issue, help you know battery status in advance to prevent possible battery failures. Features -Color: Red. -Material: ABS, copper, rubber, electronics. -Size: About 13.00X6.70X2.90cm/5.11X2.63X1.14in. - Durable and : Come with LCD screen, and remind function make it to be more durable and reliable. - LCD screen with backlight, clear digital display during operation. - Battery analysis indicators including accurate voltage, resistance, value and battery status. - The complete test range (5-9995) provides greater flexibility for battery selection. - The high-definition display allows us to see the measurement results clearly and quickly. Specification: Display: LCD screen. Application range: 12V battery. Voltage range: 7~15V. value range: 5~9995. Working temperature: -20 degree centigrade~60 degree centigrade. Storage temperature: -20 degree centigrade~60 degree centigrade. Package list: 1 x tester 1 x manual