606 Ft DECT&BT Headset : Dect & Bluetooth dual-mode wireless headset, enabling seamless plug-and-play applications in multi-devices (IP phone, PC, Cell phone). DECT Tech bring superior 606 ft long range, higher density, and safer calls. Noise-cancellation Headset: 3x noise cancelling mic and Acoustic Shield Tech 2.0, auto-block background noise. Advanced stereo tech delivers full dynamic sound quality, and achieves immersive & interactive communication. Extended Battery Life: Headset with DECT base offers extended talk time, Bluetooth mode-26H (mono), 32 H (dual), DECT mode-14H (mono), 16H (dual),1.5H fast charging time. On ear headset can perform energetically after a short break. Ergo Work Headphones: Ergonomically designed adjustable headband, nano breathable and soft material to minimize ear pressure. Visual busylight office phone headset ensures you stay focused on your conversation without interruptions. Yealink Teams/UC Certified Headset: Yealink Manufacturer offer 2-year , backed by professional customer service and a technical team, that aims to provide better services. Part Desk Phone Compatible List--Connect via USB Cable, Yealink:T58W,T54W,T57W,T53,T44W,T34W,T43U,T46U,T48U,MP56/58/54; 3-Party Phone: GXP2170/2624; 8861; VVX350/401/411/450/600; J189. Connect via EHS62 / Telephone Cable Optional Accessories, Yealink: T27G,T29G,T4XG; 3-Party Phone: VVX311/310/400/410/250; 8851,7962,6945,7821,6871; 6867i; 9608,9621G,J139/179/189; Bluetooth phone headset adopt nano breathable material and ultra soft memory foam to minimize ear pressure. Adjustable headband and 280° rotating microphone make it easier to use. The office headset has a bilateral visual busylight, which allows you to focus on communication without interruptions. At the same time, multiple mute settings (push up the microphone arm or mute button) allow you to flexibly switch conversation scenes. Yealink headset offers a 2-year , backed by professional customer service and a technical team, that aims to provide better services. Part Desk Phone Compatible List--Connect via USB Cable, Yealink:T58W,T54W,T57W,T53,T44W,T34W,T43U,T46U,T48U,MP56/58/54; 3-Party Phone: GXP2170/2624; 8861; VVX350/401/411/450/600; J189. Connect via EHS62 / Telephone Cable Optional Accessories, Yealink: T27G,T29G,T4XG; 3-Party Phone: VVX311/310/400/410/250; 8851,7962,6945,7821,6871; 6867i; 9608,9621G,J139/179/189;