Burberry Sunglasses. Series William. Series number: BE4325. Color code: 300273. Shape: Square. Lens Width: 59 mm. Lens Bridge: 14 mm. Arm Length: 145 mm. 100% UV protection. Frame Material: Plastic. Frame Color: Dark Havana. Lenses Type: Brown. Rim Style: Full-Rim. UPC/EAN code: 8056597333177. Burberry William Brown Square Mens Sunglasses BE4325 300273 59.