Multifunction sequencer T-1, equipped with 16 buttons and 8 knobs. - Model Name: T-1 - Brand: torso electronics - Included items: USB cable - Included items: Headphones - Number of buttons: 16 - Number of knobs: 8 Thank you for viewing. Please see the second photo for included items. As shown in the fifth photo, there are markings on the buttons made with a marker. Please confirm before purchasing.