Not sure what to buy or need help with your new product? We've got you covered! Call our Circuit City experts at 877-234-8013 for personalized shopping advice and product support. Rechargeable battery offers up to 30 hours of use on a charge. Built-in microphone enables simple hands-free chatting via a compatible device. Bluetooth interface enables simple wireless pairing with your Bluetooth-enabled device. On-ear design for comfort during extended listening sessions. Folding design along with an included carrying case enables easy portability. Stereo design delivers crisp tones. Included: 1 Warranty Card(s) Features: Built-In Microphone, Volume Control, Bluetooth Compatible, Rechargeable Battery Type: Lithium Ion Impedance: 32 Ohms Manufacturer Warranty: 2 Year Labor Power Source: Battery (included) Measurements: 3.7 Length/Inches, 3.3 Width/Inches, 1.4 Height/Inches Weight (lb.): 0.38 Lb Country of Origin: Imported