This Tyto Sport Safety Light from Silva comes with a red and white light, and as a bonus the batteries are included. They have 3 LED's each and flash or go on full beam. Each lamp has a clip so you can attach the Tyto to head bands, backpacks or jerseys. They are also supplied with a velcro strap that is large enough to go round a seat post on a bike.
Easy to fit on clothing, packs or equipment
Highly water resistant
Battery life: 24h (constant) / 100h (flash)
Weight: 25g / 1oz
Water Resistant to IPX6. Copes with splashes & light rain