1.Led cup -Decoration,ornament,souvenir for Christmas, birthday , parties etc -Decorative your home. -As for gifts , holiday gifts , promotion gifts, business gifts. 2.Use and Care: - Led birthday party ( promotion gift ) . - Apply to the use of household indoor air. - For maximum durability, you should turn off the switch. Avoid that batteries come in contact with water or fire. The button cell is not rechargeable. Empty batteries must not be disposed of with household waste disposal should be via trade or the place specially equipped collection.