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O'S OPTICAL

Echo

Echo

Titanium Square — Quick Clip-On
US$119.99
US$119.99
Sale Sold out
Shipping calculated at checkout.
Color: Gray
Lens Options

Provide Your Prescription

Eye SPH CYL AXIS
Right (OD)
Left (OS)

For any special requests or clarifications, please send your prescription (photo/PDF) to our customer service.

The Echo clip-on frame is built for versatility and strength. Crafted from titanium in a square silhouette, it offers durability with a sleek, modern profile. Weighing 29.20 g, it comes with quick clip-on functionality, allowing you to adapt easily from clear vision indoors to sun protection outdoors. A dependable everyday choice in bold black.
Specifications:
*Weight: 29.20 g
*Lens Width: 52 mm
*Bridge Width: 19 mm
*Temple Length: 148 mm


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Online Prescription Glasses Process

Choosing the Right Lens

Selecting the right lens index depends on your prescription strength (diopters). 
  • 0 to -2.00 diopters (mild prescription): 1.56 index recommended
  • -2.00 to -4.00 diopters (moderate prescription): 1.61 index recommended
  • -4.00 to -6.00 diopters (strong prescription): 1.67 index recommended
  • Above -6.00 diopters (very strong prescription): 1.74 index recommended
Note: Prescription strength may also be shown as “sphere (SPH)” in your eye test results. For example, -2.00 SPH ≈ -2.00 diopters

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