LED Heart Beat Keychain
  1. LED Heart Beat Keychain
  2. Lovely Heart shape design 
  3. Can be safety hanger for the backpack. 
  4. Can be Key-finder for the big bag at night.
  5. CR-2032 Lithium battery X 2 PCS.500,000 flashes 
  6. 2 functions: Motion sensor and auto blinking.
  7. 4 LED Light