Enjoy superior wireless connectivity with a range up to 150 meters/490 feet, and all day battery life. Advanced noise-cancelling microphone and enhanced speakers deliver crystal-clear calls even in noisy offices. Meets Skype for Business Open Office requirements. Overcome interruptions with an integrated busylight that acts as a do-not-disturb sign for colleagues. Increase your availability for customer calls. Can connect to up to 5 phones simultaneously, including desk phone, softphone and smartphone/tablet. Choose your wearing style from stereo, mono, and lightest-in-category convertible models.