Momentum Wireless is part of the second generation Momentum headset family. Bluetooth technology frees you from wires while the NoiseGard hybrid active noise cancellation virtually eliminates unwanted ambient sound further enhancing the audio experience. Slightly larger ear cups using ergonomically designed, leather covered memory foam cushions provide higher comfort for sessions that last longer. The folding headband features hidden hinges providing improved portability. Noisegard hybrid active noise cancellation for isolation and high audio performance. Closed circumaural design featuring Bluetooth wireless technology. Silicone ear pieces. 1.4m cord length. Straight cord. Adjustable headband. Carry case. Bass control. Batteries required 1 x Li-Ion battery (included) . Model number: 506381. Manufacturers 2 year guarantee.