Review on 🚴 Serfas Thunderbolt 2.0 120 / 50 Light Combo: Brighten Your Ride with Dual-Intensity Lighting by Juan Moncrief

The previous version was my favorite bike light system. I like this version even better. Separate attachment straps allow them to remain on the bike while the working portion of the device (shown in this image) is removed for charging. No more fiddling with straps for occasional charging. Install fasteners and forget about them. The charge feedback mechanism (flashing blue light) is OK. This version seems to load faster than the previous version and the actual runtime is much longer, especially in day blinking mode. In my opinion 10 hours of battery life. I am struck by the thoughtfulness of this new design. Serfas has raised the bar.