Audio cable (3.5mm stereo jack to 3.5mm stereo jack)  for use with your Bose Sounddock Series 2. 

Directly connect iPhones, smartphones, mp3 players etc. with a 3.5mm headphone socket to your Bose Sounddock Series 2 via the Aux input on the rear of the Bose speaker. 

Note: For iPhone 7, 8, 10, X  etc without headphone socket, use the Apple Lightning to 3.5mm socket adapter included with iPhone.