Nite Ize ShoeLit Indicator Enter your model number above to make sure this fits. Easy on off by pressing and holding switch Water resistant and it floats Available in four eye-catching colors: Blue, Red, Pink, & Green Features passively reflective pattern for safety when not illuminated Secure clip: easy to attach and remove Easily replaceable 1 x CR 927 3V Lithium battery included; battery run time: 24 hours Dimensions: (Length x Width x Depth) 1.20" x 1.00" x 0.62" | 30.45mm x 25.30mm x 15.80mm; Weight: 0.18oz | 5g