This is an ultra-compact jigging machine that doesn't take up much space. A "reverse connection prevention function" has been newly added. Even if you turn the power switch ON, the pilot lamp will not light up if the positive and negative terminals are connected in reverse. Of course, it will not operate. The lamp will only light up and operate correctly when connected properly. The rod rest and clamp parts use a new [NAKAZIMA universal rod rest]. The battery is 12V only. Please connect the positive and negative terminals correctly. Please note that this is handmade by an amateur, so it is full of imperfections. Please refrain from purchasing if you are concerned about this.