I bought this out of curiosity, but I haven't had many opportunities to use it, so I'm selling it. It comes with a power adapter, so you can use it without worrying about the battery. KORG mini kaoss pad 2S, a dynamic effect processor with a variety of effects. - Brand: KORG - Model Name: mini kaoss pad 2S - Included Accessories: AC adapter - Type: Dynamic Effect Processor Thank you for looking.