Monster Audio Cable for Smartphones - Retail Packaging, 3.5mm Input, 4ft. Black Silver 3.5mm male-to-male stereo audio cable transmits audio in stereo format. Works with any device equipped with standard 3.5mm audio jack or AUX-in port. Re-enforced connector head to avoid breakage at connector. Monsters Live Forever guarantee. Duraflex protective jacket protection from cuts and abrasion.