Only used a few times. In excellent condition!! Advanced Sound: Solo Pro features an advanced acoustic platform with powerful, emotive sound and balanced tonality for an improved listening experience. Dual Modes: Choose between Active Noise Cancelling (ANC) to block external noise or Transparency mode to filter in environmental sounds while maintaining sound quality. Ergonomic Design: Designed for comfort with adjustable brushed metal side arms and seamlessly integrated controls for a sleek, stylish finish. Long Battery Life: Up to 22 hours of listening time with ANC or Transparency on, and up to 40 hours with both modes off. Fast Fuel charging provides 3 hours of playback with a 10-minute charge. Seamless Connectivity: Class 1 Bluetooth technology offers extended range and fewer dropouts. Automatically connects to Apple devices when unfolded. Exceptional Call Quality: Dual-beam forming microphones and a speech-detecting accelerometer filter out external noise for clear call performance. Included Accessories: Comes with a carrying case Tech Specifications: On-ear form factor, Bluetooth and wireless connections, rechargeable lithium-ion battery, height of 7.05 inches, and weight of 9.42 ounces.