Feature:1. Convenient design, it supports BM2 4.0 wireless monitoring, which can monitor up to 4 devices, allowing you to better control the battery condition.2. A wide range of uses, it supports all 12V car batteries, can perform automatic detection of voltage, power, starting power, engine start, etc., free apps for iOS and for Android.3. Smart design, it has a smart date connection function, when entering the range, the application will send the battery status to the mobile phone notification bar.4. Convenient operation mode, it can be directly connected to the battery, no password is required, and it can be used directly with a scan machine for backup or the user to manually scan the to download the software.5. Small size, it is lightweight and portable, can be easily installed with the battery, can be used in more situations, and help you easily monitor the battery.Specification:Item Type: Battery MonitorMaterial: ABS+RubberModel: BM2Support: It is suitable for all 12V car batteries.Applicable System: for 4.3 and Higher, for IOS 7.1 and HigherApplicable Devices: for 3 and Higher, for iPhone 4s and HigherLanguage: EnglishConnection Method: BluetoothAdvanced Function: It can be installed in the car and the battery can be monitored in real time through the mobile phone APP (free app for iOS and for Android). Package List:1 x Battery Monitor TesterNote:Please use it within the scope of the applicable software, system and regulations.