Used for a few hours on holidays (once a week) for about a year, so I think the total usage time is low. I don't feel any battery degradation either. - Brand: SHANLING - Bluetooth Support: SBC AAC LDAC (receiving only) - Control Functions: Volume adjustment buttons Accessories: Complete set (charging cable not included) OTG cable, Quick start guide, Rubber feet for stationary use The outer box is silver, but the main unit is black. Bonus: Comes with a separate, genuine case (sold separately). The main unit was used with the case, so I personally think it's in relatively good condition. The dedicated case and OTG cable show signs of use. [Important] This is a used item, please understand before purchasing. Thank you for viewing.