[. . . ] [. . . ] It's low-profile design and multi-device connectivity is the ideal solution for users who appreciate great comfort and premium audio quality in any professional situation. Features Up to 100 ft range. to a desktop phone, PC and Bluetooth-enabled mobile phone. Multi-connectivity Self-adjusting VoiceMaxTM 3D ball joint gives the user a customized, guaranteed perfect fit. dual-microphone array reduces ambient noise and focuses on the frequency range of speech. safeguards the user's hearing from potentially dangerous spikes in receive-volume with Sennheiser's HSL 10 handset lifter and TCI 01 for interfacing with new electronic hook-switches with PC cable, power adapter, USB charger, Car charger, headset and docking station ActiveGardTM Compatible Ships Sennheiser Electronic Corporation, One Enterprise Drive, Old Lyme, CT 06371 · Tel:(860) 434-9190 · Fax: (860) 434-1759 · www. sennheiserusa. com VMX Office Technical Data Sennheiser is a registered trademark of Sennheiser Electronic GmbH & Co. KG Bluetooth® Talking time Standby time Weight of headset Transmission data Microphone types Sensitivity Receiving data Speaker type Sensitivity Max output 2. 0 Up to 5 hours Up to 100 hours 15 g / 0. 5 oz 2 Electret paired/balanced - 36dBV/Pa Dynamic ­ bi directional ­ Neodymium Magnet 94dB SPL@1mW / 1kHz 104 dB SPL limited by ActiveGardTM *Specs and features subject to change without notice Frequency response 300Hz - 3, 400Hz Frequency response 300Hz - 3, 400Hz 09/08 Printed in USA Sennheiser Electronic Corporation, One Enterprise Drive, Old Lyme, CT 06371 · Tel:(860) 434-9190 · Fax: (860) 434-1759 · www. sennheiserusa. com [. . . ] [. . . ]