Smart 12V+ is a utility based on bluetooth and mobile phone positioning. Method of use: the hardware electric and open, open the phone bluetooth; When you open the APP, the phone will search the hardware automatically, and when you find the device, it will automatically link to the device. Please agree to use mobile bluetooth and your location. Main functions: 1. Monitor the real-time vehicle battery voltage and power, the automatic analysis of the state of the battery, and stored in the phone, you can view the past 7 days and 30 days of electricity record; 2. When the device disconnect and mobile phone bluetooth connectivity, disconnected automatically record the position and time, the user can in the phone APP to view the final position, help find vehicles; 3, the equipment can be set via the display light mode, create different lighting environment and atmosphere, can be in the mobile phone music files are added to the APP play, create a good atmosphere of music, enjoy the music is not the same as seeing and hearing feeling;