Great for what they are: Be seen (but you won't see others),
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This review is from: ETC Twin LED Light Set (Sports)
These lights are great value for what they are: small cheap lights that ensure a road user will see you.
They do not make any meaningful contribution to you seeing what is ahead, but in a busy city or well lit road this is not a problem.
Currently buying another set (for a different bike), again for city cycling.