Feature:1. LED Effect: The Easter eggs light up is glowing in the dark, with bright LED effect, suitable for Easter parties2. Built in Battery: The Easter eggs lights have a built in battery, which can light up continuously for 72 hours, and the battery can be replaced to continue to use after running out of power3. Plastic Material: The Easter eggs lights are made of eco friendly plastic, which looks glossy, durable and has no wearing parts for safe play4. DIY Interesting: The process of DIY the glowing Easter eggs can help children improve hand eye coordination, cognitive ability, imagination, and promote parent child interaction5. Scope of Application: The Easter eggs light up is a DIY Easter egg toy to decorate your favorite Easter party with parents, friendsSpecification:Item Type: Easter Eggs Light UpMaterial: PlasticMaximum Diameter: Approx. 4.5cm/1.8inHeight: Approx. 6cm/2.4inBattery: Each Egg Has 2 Built in LR1130 Button Batteries with a Capacity of 130MAH (included)Weight: Approx. 145g/5.1oz.Package List:12 x Easter Eggs Light UpNote:Shipped with Built in Battery