olloclip - Wide Angle/Macro/Fisheye Lens Material: [lenses] coated glass multi-element optics, [barrel] aircraft-grade aluminum, [attachment] plastic, [case sides] rubber Dimensions: [case] 6.3 x 3.2 x 0.4 in, [lens] 1 x 1.5 x 2.1 in Claimed Weight: [case] 4 oz, [lens] 10 oz Manufacturer Warranty: 1 year