Can not recommend this product highly enough, if you rid on your own its an absolute must have . Knowing what's behind you with out have to constantly look over your shoulder is invaluable. If your in a group you can call out approaching cars and pull into single file to protect your whole group. The light is supper bright and goes through a series of lighting patterns that grows progressively brighter as a car approached , very clever stuff.
Quality: 5
Value for money: 5