The ENGO 3 smart glasses are a highly specialised sports wearable that prioritises performance data display over general-purpose features. Designed for runners and cyclists, they project metrics such as pace, heart rate, cadence, power, and distance directly into the wearer's field of vision, allowing athletes to maintain situational awareness without glancing at a device.
Lightweight and Durable Design
Weighing remarkably little, the ENGO 3 feels closer to premium sports sunglasses than a bulky smart device. The wraparound design offers excellent coverage, while the adjustable nose bridge and flexible temples ensure a secure fit during intense workouts. The glasses are built to withstand sweat, rain, and dust, making them suitable for year-round training. The photochromic version tested automatically tints lenses, enhancing visual appeal.
Focused Heads-Up Display
The heads-up display projects data as a floating image several meters ahead, enabling athletes to monitor performance without distraction. Colour-coded zones provide instant feedback for staying within target heart-rate or power ranges. Unlike many AR glasses, the ENGO 3 does not support notifications, messaging, or entertainment; every feature serves athletic performance.
Improved App and Battery Life
The redesigned companion app allows users to create customised data screens from over 40 performance metrics, tailored to different activities and workout types. Battery life is a strong point, with ENGO claiming up to 20 hours of continuous use—a significant improvement over earlier models and sufficient for marathon runners, ultra-distance athletes, and long-distance cyclists. In testing, battery performance matched claims.
Ecosystem Integration
The glasses support a broad range of Garmin devices and integrate with Apple Watch, making them accessible to athletes already using popular fitness ecosystems. Bluetooth connectivity proved reliable, and setup was straightforward.
Limitations
The ENGO 3's greatest strength—its focus—is also its biggest limitation. There is no camera, microphone, music playback, voice assistant, or notification system. Users expecting a competitor to Meta's consumer smart glasses may find the feature set surprisingly narrow. According to Daniel Smith, the reviewer, "proper athletes will love them."
Pricing and Availability
The ENGO 3 smart glasses are available from £299.95 on the ENGO website. User feedback notes improvements over the ENGO 2, including a better app setup and Garmin workout step display, but some criticise fit, lack of interchangeable lenses, and absence of Varia radar display.
