Yes you can! You can pair your Powerbeats2 with 8 other devices, but the Powerbeats will automatically paired with the last paired device.
To manually pair with another device, press and hold the power/connect button for 4 seconds.
More information on Beats official site can be found here.
For a step by step guide on pairing your Powerbeats with an iPad or iPhone watch the video below or click here.
Beats by Dr. Dre - Powerbeats2 Wireless Earbud Headphones