Velleman Flashing LED Sweetheart # MK 101 (requires soldering assembly)
Product Description

<----- Click on the image to see it in action!
Show your love in an original way that your heart still beats faster for him or her. 28 LEDs form 2 blinking hearts.
Specifications:
Consumption: ± 8mA
Power supply: 9V battery (not incl.)
Dimensions: 2.4 x 2.4 x 1.2"
Makes a unique Valentine's Day gift.