The N60NC Wireless features top-notch reference class ANC technology with playtime of ANC + BT mode for 15 hours, 30 hours in ANC wired or forever in passive mode. Auto switch to BT mode when the cable is detached, with no need to activate the BT pairing. It can be folded flat and stored in the pouch for full portability. Features an integrated universal one-button remote cable with microphone to complement usage with all smart phone types.