Sennheiser 504365 Power Adapter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Weight: 1.2 oz</li><li>Voltage Required: 4.75 - 5.25 V</li><li>Voltage Provided: 3.6 - 5.25 V</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31EYQxnBDEL.jpg" noproxy>