... :3-7cm diameter flashing pin Material:plastic,led lgiht To activate,twist backing clockwise. Led magnet heart shaped flashing pin badge1,How it ... environment friendly.1)Item:flash pin badge2)Size :3-7cm diameter flashing pin 3)Material:plastic ,led lgiht4)Offset print: full ... it's a good promotional gift5.3 models backside:pin,butterfly cap,magnet.- To activate, twist backing clockwise. To deactivate ...