• Corrective lens for use with IST M55 Corona and ME55 Pro Ear Mask
• Offers diopter correction from -1.0 to -8.0 (in -0.5 decrement), +1.0 to +4.0 (in +0.5 decrement)
• Tempered, scratch resistant glass
• Left and right lenses are interchangeable
• Lenses are sold individually
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