Warranty: 120 Day Angulation U​/​d: 180​/​130 Up​/​Down Biopsy Channel: 2.0mm Diameter, Mm : 4.9mm Working Length: 60cm Olympus BF-Q190 Video Bronchoscope with 4.9mm Outer Diameter, 2.0mm Working Channel, 60cm Working Length, 120° Angle of View, Angulation 180°​/​130° Up​/​Down Return Policy: Items are sold as-is with no returns or refunds available unless explicitly stated.