This audio headset adapter cable allows the connection of a conventional PC headset to the 4-pin. Audio output, as it is used eg in smartphones, mobile phones and notebooks. The pin assignment of the more→adapter works eg with Apple iPod touch 2G, the iPhone (3G, 3GS, 4, 4S, 5), MacBook Pro, MacBook Air, HTC smartphones (eg Legend), as well as some Lenovo notebooks ( eg Thinkpad T510 series) or DELL Latitude notebooks. This 15 cm long Y-adapter cable combines a single-jack (1x 3.5 mm stereo) with a dual-jack connector (2x 3.5 mm stereo jack). Technical details:Length: 0.15 mColor: black, red, greenConnections: 1x 3.5mm stereo jack (male) 2x 3.5mm stereo jack (female)