Attaches Easily To The Back Of The Seat Post, This 3 Led Tail Light Offers 3 Functions: Steady, Flashing, And Superlight. It Comes In A Bright Blue Plastic Lens - Please Note That Although The Case Is In Blue, The Leds Are Highly Visible Red For Its Maximum Safety And Visibility. Comes With A Clip-mount. Dimension Is About 2 1/2" X 2".

* High Visibility Red Led Lights

* Measures 2.5" X 2"

* Comes With A Clip Mount

* Needs 2 "aa" (not Included)

* Excellent Quality