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Additional noteworthy watch features include Moon Phase and Tide Graphs tracking

Does it track multiple time zones

It is powered by a reliable quartz (battery-powered) movement

Is the crystal durable

Ray-Ban Erika Classic RB4171 Havana Brown Gradient Sunglasses Product Type_Necklaces transparentRay Ban Erika Classic RB4171 865 13 combines one of Ray Bans most recognisable silhouettes with soft everyday styling. Finished in a matte Havana frame with brown gradient lenses and slim metal temples, this lightweight design creates a relaxed look that transitions effortlessly between holidays, city days and everyday wear. Why you'll love them Brown gradient lenses designed to create a softer visual transition throughout changing light conditions