Cindy Bourdier

"As a middle-distance runner specializing in the 800m, every fraction of a second counts. During my training, I used ENGO to fine-tune my running dynamics—adjusting my stride length, foot placement, and posture. Having that real-time feedback helped me understand how even small tweaks could boost my efficiency. I applied those insights in competition, and when I hit a 2'04'27, it felt like all the hard work had finally clicked. That performance qualified me for the French Nationals, and ENGO played a huge part in helping me get there.
The 800m is a unique hybrid distance requiring both explosive speed and aerobic efficiency. We operate constantly on a razor's edge where the slightest inefficiency—a moment of tension, an unnecessary movement, a pace miscalculation—can cost precious seconds. This is precisely where ENGO has transformed my training approach.
For nearly two years, I've integrated ENGO eyewear into my threshold sessions and fartlek workouts. The ability to monitor my pace and heart rate without disrupting my stride has added a new dimension of precision to these crucial sessions. When my coach prescribes specific intensity zones, I can maintain them with perfect accuracy without the energy-draining gesture of checking my watch.
What might seem like a minor detail—eliminating the need to glance at my wrist—actually represents significant energy conservation over the course of a demanding session. At the elite level where margins are infinitesimal, this efficiency can be the difference between hitting a training target and falling short.
The French athletic system emphasizes precision in preparation, and ENGO aligns perfectly with this philosophy. As I work toward making my mark at the senior level, having this technology as part of my daily training provides both physical and psychological advantages. The confidence of knowing exactly where I stand at any moment during a session allows me to focus entirely on execution rather than data collection.
Pour les athlètes qui cherchent à optimiser chaque détail de leur entraînement, je considère qu'ENGO est un outil indispensable qui apporte un véritable confort et une précision remarquable à la préparation quotidienne."
Discover engo3




Everything runners ask, answered.
Will I even notice a difference?
The engo3 uses fixed tinted lenses (category 3), perfect for very sunny conditions. The engo3 Photochromic features photochromic lenses that automatically adapt to light levels (cat. 0 to 3), making it ideal for changing light conditions.
Is engo3 compatible with Garmin?
Yes it is, with over 81+ models of Garmin devices, plus Apple Watch.
How is engo3 different from Meta Oakley Vanguard?
engo3 is a pure performance display built for serious runners and cyclists: a lightweight AR heads-up display (38.5g) that projects your stats (pace, heart rate, cadence, and more) right in your line of sight, with 20+ hours of battery life and no camera, music, or notifications to distract you.
The Oakley Meta Vanguard is a general-purpose smart glasses product with a built-in camera and Meta AI, giving you sport stats through voice commands or audio rather than a visual display, with about 9 hours of battery life. In short: engo3 keeps your eyes on the road and your data always visible, Vanguard is a multitasking device where sport is one feature among many.
How long does the engo3 battery last?
24+hours
Can I use engo3 for trail running or ultras?
Yes!
Does engo3 have a camera?
No, engo3 doesn't have a camera. It's built purely as a data display: no camera, no music, no notifications, just your real-time stats (pace, heart rate, cadence, etc.) projected in your field of view. That's a deliberate choice to keep it light (38.5g) and focused on performance rather than content capture.
What is the weight of engo3?
38.5 gr
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