Features 1、Waterproof Surface: The surface of the battery meter has good water resistance, can be used in outdoor environments, and has stable working performance. 2、Lightweight and Portable: The battery meter is small in size, light in weight, easy to carry, can be installed quickly, and is easy to use. 3、Multifunctional Meter: The user can switch the display between voltmeter and battery percentage with a button, as well as backlight, sleep mode and more. 4、Safe to Use: The battery monitor has a reverse connection protection design, and it will not burn if it is reversed, which is very safe. 5、Easy Connection: The battery voltmeter case is made of ABS material, with a built in 30cm power cord, simple connection, easy to operate, Specification Item Type: Battery Monitor Material: ABS Power Cord Length: Approx. 30cm / 11.8in Package List 1 x Display 1 x Sampler 1 x 1m Shielded Cable 1 x Instruction