The W1 Chip allows for*headphones to easily pair to your Apple devices. A user only has to activate their Headphones near their device and pairing begins.*The pairing is done on an iPhone, but can easily connect to an Apple Watch or Mac.
The new Beats Headphones that'll include the Chip are the Beats Solo3 Wireless, the Powerbeats 3 and the new Beats*X line, which Apple is saying is a comfortable, "everyday" pair of Wireless headphones.