Unified Communications 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: UC Button, Input Ports: 2x Micro USB Port, 2.5mm jack port for Busylight(Optional), Ringer, Power Adpater
