These smart glasses' display keep my eyes off my watch - and on the path ahead

• The Engo 2 Vive Photochromic glasses are on sale now for $275.
• The Vive model adds new colorways, heart rate data, functions as clear lenses or sunglasses, and has a heads-up display.
• The heads-up technology takes up space at the center of the glasses, and there's no support for Google Wear OS, Polar, or Coros watches.

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I spent a lot of time running, biking, hiking rowing and walking with smartwatches, bone conduction headphones, and smart glasses this year. For the past few weeks, I've been running and riding my bike with the new Engo 2 Vive smart glasses, and they've quickly become an essential part of my workouts.

Also: The best Apple Watches you can buy: Expert tested

Engo's limited-edition glasses come in photochromic and high-contrast lens colors for more colorful ...