Enjoy superior wireless connectivity with a range up to 100 meters/330 feet, and all day battery life. Advanced noise-cancelling microphone and enhanced speakers deliver crystal-clear calls even in noisy offices. 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 from earhook, headband, and neckband styles.