To activate your Blinkies, first pull out the paper tab, then twist the circular battery house clockwise. To deactivate, twist counterclockwise. Dimensions: 2″ x 1.1″ – LED Colors: 1 Red, 1 Blue, 1 White – Batteries: Includes 2 replaceable CR927 batteries. – Weight: 0.01 LB

Clasp Type: Safety Pin