This is a pre-owned Dean Markley GT-1000 Personal Micro Guitar Amplifier that has been previously used and shows signs of regular wear. The item does not come with a battery or power adapter. Despite being pre-owned, the amplifier still functions well and is a great option for guitarists looking for a portable and versatile practice amplifier. The Dean Markley GT-1000 features 3 watts of power and a 3-inch speaker, and can be used with headphones or as a standalone amplifier.