Brand new, never used. The Evolve 75 is a wireless headset with superior Active noise cancellation and integrated busy light to enhance your productivity. Dual connectivity to two Bluetooth devices allows you to take calls and listen to music from the same headset, giving you extra freedom to move 100ft/30M away from your smartphone and/or PC. Features & details Outstanding sound for calls and music - world-class speakers and HD voice for crystal-clear calls and music Microphone frequency range 150Hz - 6.8kHz.Reduce noise and interruptions - Superior ANC and integrated busylight acts as a ‘do not disturb’ sign to enhance productivity Supported bluetooth profiles: A2DP (v1.2), hands free profile (v1.6), Headset Profile (v1.2), AGHFP (v1.6), Bluetooth wireless technology: Bluetooth 4.0.More freedom - Dual Bluetooth connectivity to two devices at the same time for calls and music. Flexibility to move up to 100ft/30M away from your connected Device Active noise cancellation uses advanced microphones to monitor and counter ambient noise. Talk-time- Up to 15 hours. Battery time (with ANC activated)- Up to 30 hours. Charging time- Max. 120 minutes Certified with all major communication platforms.Bluetooth:4.2