Adjustable magnifier: rotate the dial to adjust the prescription and magnification according to your exact requirements. See clearly with convenient products.Variable range: the diopter range of each lens is - 6.0 to + 3.2, which can well control the magnification. This way, you don't have to buy more than one prescription lens.For each activity, please use these glasses in your daily work. Driving, reading, watching TV and using a computer - now you just need a pair of glasses to do everything.High performance design: This product has a local edge design for men and women, which is very durable. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!