Bluetooth Earphones with Active Noise Cancelling, 20-Hour Playtime and Built-in Mic for iPhone-Black. Ergonomic Neckband Design Comfortable, stylish, and lightweight neckband design. Bluetooth V4.1, World-Class CSR Chip. Maximum pairing range can be 33ft, superior sound quality with extensive compatibility. Active Noise Cancelling. Blocks out 95% of noise, reducing ambient sound to 28dB. Long lasting battery life. Up to 15 hours of continuous play time, per charge. In-call vibration. Never miss an important call again.