Stem-Integrated Dynamo Light for Daily Riding
This compact headlight tucks neatly into compatible Tern stems to give you bright, battery-free lighting that is always on the bike. Powered by a hub dynamo, it delivers a wide, even beam that makes night rides, early commutes, and dark shoulder seasons feel more predictable and controlled.
Because the light sits inside the handlebar stem, it is better protected from bumps, folding, and casual theft than a standard handlebar light. The optics are tuned for real-world city use, putting light where you need it on the road rather than wasting it into the trees.
Engineered Simplicity
- Designed to integrate directly into Tern Andros and Syntace VRO 47 stems for a clean, protected installation.
- Hub-dynamo powered output with Clarity™ optics for a broad, even beam rated at approximately 40 lux and 150 lumens.
- Standlight function keeps you visible to traffic for a short time after you stop at intersections.
- Patented CryoCore™ cooling design uses the handlebar as a heatsink to maintain bright, efficient output.
- Cold-resistant ABS housing developed with Herrmans in Finland, built to perform in low temperatures and wet conditions.
- Positioned low and centered at the stem for stable, road-focused illumination without blinding oncoming riders.
- Works with the BioLogic Joule™ 3 and other standard hub dynamos for always-ready lighting without batteries or charging.
