Features: 1.Wireless remote control electronic fireworks shooting system,very convenient. 2.The receiver is very economical,they can be used separately. If one fails,others will continue to operate. 3.The system is scalable. Just buy more receivers from the website below. 4.Receivers are pre?programmed for your convenience, but they are reprogramable. 5.Made of high quality material,the product is durable. specification: Wireless remote control electronic fireworks shooting system,very convenient. The receiver is very economical,they can be used separately. If one fails,others will continue to operate. The system is scalable. Just buy more receivers from the website below Receivers are pre-programmed for your convenience, but they are reprogramable. Made of high quality material,the product is durable. : Material:plastic Receiver: 4 AA batteries(NOT included) Launcher: 12V 23A battery(NOT included) Range: 30-50 meters (98.4-164.0 feet) Package List: 1 x Remote 1 x Firework Igniter Notes: 1.Handle your product carefully to avoid shaking and dropping. 2. Keep the receiver as far away as possible from the fireworks to avoid damage. 3. Store the product in a clean, dry area away from the container. PackageList:1 x Remote 1 xFireworkIgniter