1. Multifunctional Wireless Shunt Coulomb Meter, Bidirectional Current Detection, 2.4g Wireless Communication, Universal For Batteries 2. Suitable For Scenarios 3. More Accurate Measurement, With Charging Overvoltage, Discharge Undervoltage, Charging Overcurrent, And Discharge Overcurrent Protection, With Buzzer Alarm Function 4. Chinese And English Language Selection, Two Display Colors Can Be Switched, Suitable For Different Customer Needs 5. PVC Flame-Retardant Shell, Made Of High-Quality Industrial Grade ABS, Has Impact Resistance, High Temperature Resistance And Other Characteristics. PVC Flame-Retardant Material Shell, Safe And Reliable Model: Coulomb Meter Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:ABS+PVC Package Contents: 1x Monitor 1x Measurement Box 1x Current Collector 1x Usb Cable 1x Cable 1 String x Red And Black Wire 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.