Material : Titanium Frame, AC Lens Diopter available: +1.00 +1.50 +2.00 +2.50 +3.00 +3.50 +4.00 Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal 30 DAY MONEY BACK GUARANTEE: If you are not satisfied, return. If the reading glasses broken,return. No need to consider breakage warranty;do not need to wear repaired reading glasses. What you should do is contact us and get a new readers. If you have any problems with our items or services, please feel free to contact us . We will do our best to solve any problems and provide you with the best customer services.