DW Office Phone Single-sided DECT headset Enjoy your calls in HD voice clarity and get natural high-definition sound for superior voice clarity. Work safely ensured that the Active- Gard™ technology will protect your hearing. Imagine making every call in comfort, and being able to focus on what’s important: the conversation. Product Features: Dedicated to work with your desk phones Iconic design – crafted for best comfort Sennheiser HD voice clarity – wideband sound for natural listening experiences High comfort wearing styles - choose between ear hook and headband wearing style Noise-canceling microphone filters out unwanted background noise Pairing for desk sharing and phone conferences – intuitive and easy to set up Microphone mute and volume up and down – intuitive user interface Full workday talk time – 8 hours in wideband sound mode and 12 hours in narrowband sound mode Re-charge 50% of your battery in 20 minutes – intelligent fast charging Long distance wireless range – in typical office building: up to 55 m and in line of sight: up to 180 m ActiveGard™ technology – protects your hearing against acoustic shock