ITEM NAME:Optical Optometry Flip Trial Lens Plastic Frame Amblyopia Myopia Training S Ew Feature: 1. Color: Black 2. Material: Plastic 3. Lens degree has large options insert in it. 4. Humanized design: The handle has two grooves, antislip design and easy to hold. 5. Workmanship: Thick and solid lenses and rim;Each degree shown close to the lens. 6. Size: Bigger size than ordinary flippers enables easier use and more clear measure. Specifications: 1. Bigger size 2. Antislip design 3. With a plastic case 4. 8options of lens degree 5.Inset Lens(Not Including) -0.50D~+0.50D, -1.00D~+1.00D, -1.50D~+1.50D, -2.00D~+2.00D, -2.50D~+2.50D, -3.00D~+3.00D, -3.50D~+3.50D, -4.50D~+4.00D  and so on Optical Flipper Optometry Plastic Flip for Lens Confirmation Test Pacakge include:1X Flipper Optometry Plastic Flip( not including  Lens) Notes: Due to the difference between different monitors, the picture may not reflect the actual color of the item..Lens degree has large options insert in it. 8options of lens degree. Inset Lens(Not Including). With a plastic case. Material: Plastic. Color: Black. Due to the difference between different monitors, the picture may not reflect the actual color of the item.