TSV Bike Turn Signals Light, 100LM 5-in-1 Smart Bright Bike Rear Tail Lamp IPX2 USB Charge Waterproof Safety Cycle Night Light

This directional light with remote control works much better than I expected. It costs less than half the price I previously paid for a magnetic light that fell off on my second ride and was never found, making this option a much more economical and secure alternative. The only thing I didn't like as much, but which was very easy to fix, was the elastic mounting strap. Since the tube on the bike's rear basket is thinner than the seat post, the light tended to roll and end up pointing up or down. To fix this, I used electric tape around the tube and wrapped it around the strap as well to secure it properly. This gave it excellent firmness and a much more stable hold, preventing it from shifting or falling off. ​Even with this minor technical detail, I fully recommend it.