50 (20/40) Children Vision Training Adjustable Interpupillary Distance Flip Racket

1. The interpupillary distance range is adjustable from 44 to 87 mm, and can be used by both children and adults2. High-definition resin lenses are used, the lenses are clear and transparent, and the readings are accurate3. The frame is sturdy and not heavy, and the operation is convenient and simple4. Equipped with a matte film vision card, which is non-reflective and clear and easy to read5. Material: glass lens + plastic6. Optional degrees: +/-50 degrees, +/-100 degrees, +/-150 degrees, +/-200 degrees, +/-250 degrees, +/-300 degrees, +/-350 degrees, +/-400 degrees7. Interpupillary distance range: 44-87 mm8. Product size: 19.8 x 9.9 cm9. Weight: 118 gramsPacking list:-Flip racket x 1-Vision card x 1-Instruction manual x 1