Ray Ban Sunglasses RB 3506 RB3506 004/13 Metal Gun Gradient brown Metal frame Glass lens Polarization Lens width: 64 millimeters Bridge: 13 millimeters Arm: 135 millimeters Model No : RB3506 Lens Color :gunmetal/brown gradient All items come with original case, cloth and manufacturers papers. Ray Ban men Sunglasses Color Code : 004/13