Cannondale's Foresite HS Headset Spacer Light is a dusk/day running light that smartly integrates tow white LED lights into your bike’s steerer tube. Those LEDs operate in steady or flashing modes for up to 100 hours. Constructed of durable nylon and plush silicone, the Foresite HS is lightweight, weather resistant, and easy to operate.
Run time: 100 hours (flash mode)
Uses 2 CR2032 button batteries (included)
Replaces 30mm integrated headset cone spacer for 46-47mm OD frame head tubes