Philips SHB8750NC/27 Wireless Noise Canceling Headphones, Black Active Shield noise canceling reduces noise by up to 97%. Connectivity Technology: Wireless Convenient hands-free calling with mic and Bluetooth 4.0. Press and hold the ANC on/off button for 2 seconds to enable noise cancelation. Rechargeable battery offers up to 16 hours of wireless music Simple NFC one-tap pairing Activate Siri and Google Now with a press on ear can button