A peripheral device, e.g., a headphone, connected to a communication device may have controls that are configured to switch between a regular mode and a purchase mode. When in the purchase mode, the controls of the peripheral device may be configured to facilitate purchase by receiving user input related to making a purchase. The peripheral or the communication device may be configured to receive user instructions, such as a voice command, to switch between the regular mode and the purchase mode. In particular, the controls may include volume buttons configured to adjust volume in the regular mode and configured to adjust purchase price in purchase mode. The controls also may include a start/end button configured to selectively activate or end an application in the regular mode and configured to confirm or select a purchase in the purchase mode.