Microsoft Certified Teams Standard DECT Wireless Headset DECT Headset: Binaural Ear (dual ear) over-the-head Headset, Busylight on headset, Leather Ear Cushions, Yealink Acoustic Shield Technology DECT Base: Microsoft Teams button, Input Ports: 2x Micro USB Port, 2.5mm jack port for Busylight BLT60(Optional), Ringer, Power Adpater