Thank you for viewing! (*^^*) MewooFun Dog Training Buttons with Recording Function - Set of 4 As shown in the photos, the bag containing the gray and navy blue buttons is open, but it appears to have been used very little. These items were stored by a family member, so the purchase date is unknown. I do not have much knowledge about the items, so I cannot provide detailed explanations. Only those who understand that these items have been stored at home, please consider purchasing. Thank you. m(_ _)m