Thank you for viewing. I am selling this because I no longer use it. A compact VOX AP2-BS bass amplifier, with volume and tone adjustment functions. - Brand: VOX - Model Name: AP2-BS - Type: Bass Amplifier - Connection Terminals: 1/4 inch jack - Functions: Volume adjustment, tone adjustment, effect adjustment The battery life is unknown, but it will be shipped with the included batteries. Please purchase if you understand that this is a used item.