Sennheiser ACCENTUM Special Edition - ACCENTUM Bluetooth Headphones and BTD 600 Bluetooth Dongle - 50 Hours Battery Life, Hybrid ANC Technology, Dongle with USB-A/USB-C Adapter - Black/Copper

Sennheiser ACCENTUM Wireless Special Edition - ACCENTUM headphones and BTD 600 Bluetooth Dongle - 50-Hour Battery Playtime, Hybrid ANC, Dongle with USB-A/USB-C Adapter - Black/Copper

Aenllosi Hard Carrying Case for Sennheiser HD 350BT/450BT Over-Ear Wireless Bluetooth Headphones, Case Only (Black)