The Grey JBL Clip Ultra portable rechargeable speaker with integrated carabiner is a powerful little box that gives you 5 hours of battery power so you can take the music with you where ever you go. You can plug it in easily to any portable device using its 3.5 mm integrated audio cable, but you can play it wirelessly too using its Bluetooth functionality, streaming your music with no strings or cables attached or talking with your friends using its hands free speakerphone function.