Auto Battery Monitor 6-20v Input Voltage Battery Monitor

Compatible with all 12-volt vehicle batteries;Voltage: 6-20VFree app for both iOS & Android, IOS: IOS 7.1 and Later Available: Android 4.3 and LaterConnect with battery directly, no codeCheck battery state on phone APP via Bluetooth 4.0 when device is installedApp Name: Battery Monitor BM2, please scan machine backup or user manual scan code to download softwareColour:blackMaterial:plasticSize:5.91x3.94x1.97inchesPackage Contents:1 x Car Auto Battery MonitorOnly the above package content, other products are not included.Note: Light shooting 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.