Cellular Innovations Lyte Comm Pro Boom Noise Cancelling Bluetooth Headset for Cellphone - Black 10X, T2 Noise Canceling Technology Adjustable Headband Flexible Microphone & Comfort Ear Cup 10x noise cancelling bluetooth headset Over head style with adjustable headband and flexible microphone Voice-dialing, call waiting, and three-way calling Talk Time up to 6 Hours Standby Time up to 250 hours