BM2 Bluetooth 4.0 Battery Monitor Feature:Support: All 12V Car BatteryAvailable:for Android 4.3 and Laterfor IOS: IOS 7.1 and Laterfor : 4s and Later for : 3 and LaterLanguage:Multi LanguageConnection method:Bluetooth 4.0App Name: BM2, please scan machine backup or user manual scan code, download software.BM2 Bluetooth 4.0 Battery Monitor AdvancedBM2 Bluetooth 4.0 Battery Monitor Advanced Features:Installed in the car battery Real-time Monitoring Through Mobile Phone App.List the time of each drivinCompatible with all 12-volt vehicle batteriesCheck charging and cranking(alternator) systemsEngine starting detect automaticallyReceive notification of battery conditions when enter Bluetooth rangeShow voltage & charge . when user is close to the vehicle,no need open appAutomatic synchronization when enter Bluetooth rangeData stored in battery monitor up to 35 days if out of syncAlert mobile phone if some data abnormalCheck starting(cranking) system when each time engine startedCheck starting voltage each hundredth of a second when engine is startingReview historical data graphicallyProtection of short-circuit and reverse connectionBM2 Bluetooth 4.0 Battery Monitor NOTE:1. Alert users if charge is low2. Review charge history in graph mode3. Show the state of charge of battery in real time4. Near-Filed Perception to get notification automaticallyColour:blackMaterial:ABS Package Contents:1 x BM2 Battery detector Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.