FEATURES Portable. Productive. Professional. Engineered to make every call count. Great sound quality DECT dongle (Not Bluetooth) Easily transportable ​Built in busy light ​Up to ​13 Hour Talk Time with Engage 55. This intuitive headset is designed for those who spend most of their day in calls or virtual meetings, giving you an extensive wireless range and the highest levels of security, for maximum peace of mind. Whether you’re working from home or a busy office, Engage 55 will keep you sounding professional for every single conversation, no matter what’s happening around you. UNIFIED COMMUNICATIONS (UC) As flexible as you are DECT quality and security in a compact, transportable package - perfect for hybrid workers MUCH better range than Bluetooth and no issues with lots of users close together Great quality sound both ways - makes busy days less tiring and ensures you sound professional to clients Noise cancelling in microphone is excellent - your client will hear ONLY you Wear with microphone on left or right side - suits all preferences Convenient mute button on microphone - no scrabbling around on your earcup when you're about to sneeze! Up to 13 hour talk time - enough for even your businest days! Bright busy light on earcups AND on the end on the microphone - your colleagues will know when you're not to be interrupted Lightweight and comfortable for all day use