http://www.astsoundchip.com/flashing-led-module-for-pop-display/13983261.html
Product Description
1.2pc AA Batteries
2. Led color and led quantity can be customized.
3. With or Without ON/OFF Switch
4. Frequency: Customized
5. OEM is welcome
Pop Display, POS Display with LED Light, Display Flasher, LE





