Works with all 12V batteries. Wireless Bluetooth 4.0 connectivity up to 10 meters. Software included for Android and iOS. Receives notifications of battery conditions within Bluetooth range. Automatically checks vehicle cranking system during engine start. Monitors charging system (alternator). Logs driving time for each trip. Sends alerts to mobile phone when abnormal data is detected. Short-circuit and reverse connection protection. Stores up to 35 days of data in the battery monitor when out of sync. Automatically synchronizes when within Bluetooth range. Compatible with all 12V vehicle batteries. Displays historical data in graphical format. Automatic engine start detection. Free app available for iOS and Android. Color: black. Material: plastic. Package includes: 1 x Battery Monitor BM2 Bluetooth 4.0 Device for 12V Car Battery Tester. Only the items listed are included; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.