Features of anti blue light intelligent bifocal presbyopic glasses:There is no clear boundary between the focal points of progressive lenses, which is smooth and does not cause image jumping. Without removing the glasses, you can move your gaze from top to bottom to see different fields of view Lenses. Something at different distances in the middle.Anti blue progressive multifocal glasses are suitable for indoor and outdoor use 24/7, especially for people with presbyopia, such as reading books, newspapers, watching TV, playing games, traveling, collecting, and fishing. They are a thoughtful and practical helper.They can protect the eyes from very low light and clear vision (indoors or before dawn) to the most sunny conditions.The anti blue light intelligent bifocal presbyopic glasses have the following product functions:Product packaging: 1 x anti blue light intelligent bifocal presbyopic glasses 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!