Powered by one single widely available & inexpensive CR-2032 Lithium-ion button cell, the Instapark color-changing LED tealight candle can stay lit for well over one hundred hours. And it"s a great value and ideal for weddings, restaurants and parties. Coming in a generous package of 6 dozens, these candle lights realistically generate flickering effect to simulate burning candles, better yet there"s no more black smoke or flame, nothing to clean up. The long-lasting LED bulbs have an average life time of 200,000 hours. What"s in the box: LED tealight candle: 72 CR2032 battery: 72 (installed) Note: Please remove the plastic insulation tape prior to use.