The J Geils Band was wrong, my friend Love REALLY doesn’t stink And with this Sweetheart of a Necklace What love REALLY does is BLINK!!! This acrylic LED heart has a gorgeous still light function. The radiating light creates a modern, glamorous glow. To activate this item pull both necklace strands out of the battery pack. Once both sides are removed reverse the battery pack, then insert the strands back into the battery pack. This will activate the bright still light for hours of glow. Each pack of 10 includes 5 different colors. There are 2 Red, 2 Blue, 2 White, 2 Orange and 2 Pink Light up hearts. Each necklace is clear and the color associated is that of the LED within the necklace. For smaller quantities I will assort as best as possible. Include a message with your order or email me for specific color requests. I’ll do my best to comply, but can’t promise. NOTE: HEARTS DO NOT CHANGE COLORS. Dimensions: Height: 1.37 in. , 3.47 cm. – Width: 1.37 in. , 3.47 cm. LED Colors: 1 Blue, 1 Red, 1 White, 1 Pink, 1 Orange Includes 3 replaceable AG3 Batteries.