C2G / Cables to Go 40641 3.5mm Stereo Male to Dual 3.5mm Stereo Female Adapter
Convert a single 3.5mm stereo output to two 3.5mm stereo outputs. This adapter enables two sets of 3.5mm headphones to share the same 3.5mm output coming from an MP3 player, CD player, computer, etc. Connector 1: (1) 3.5mm Stereo Male Connector 2: (2) 3.5mm Stereo Female