Features:1.Ideal for maintaining the batteries charge over time.2.Connects direct to the battery terminal and is cut off by loosening the green wheel.3.Scope of application: various types of battery with a diameter of 17mmDescription:1.Lightweight, compact design, safe and easy to operation.Specifications:Fitment:Universal fits all 6v,12v and 24v batteries:cars,vans,boat,motorcycleQuantity: 1 pcColor:red ,black optionalSize:17mmPackage Included:1 x Cut off SwitchNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow slight dimension difference due to different manual measurement.