Small, powerful and surprisingly bright, Giant's Numen Mini Taillight is perfect for those days where you rode just a little later than you thought and get caught out in the dark. It's so light, you can just leave it on your seatpost, you'll barely notice it! Cars will notice it though, with its 2 bright LEDs. The flexible rubber mount attaches almost everywhere on your bike. It's got a run time of up to 80 hours and features 3 modes: steady, flashing and random.
Also available in Red, White, Light Green and Light Blue (images unavailable from manufacturer).