Feature: 1. INNOVATIVE DESIGN: It adopts an innovative design that can add a sparkling effect to the stage. Through cold spark technology, it makes the whole scene more eye catching. 2. MULTI PURPOSE: Suitable for various occasions such as bars, weddings, performances, etc. It can enhance the ambiance, add highlights, and add more fun to the event. 3. SAFE AND RELIABLE: It adopts the latest technology, which not only presents gorgeous effects, but also ensures safety, no sparks and no smoke, guaranteeing the smooth running of the event. 4. EASY TO OPERATE: The cold spark firework machine is easy to operate. Users can start it with just one button, which is convenient, saves time and energy, and easily creates amazing cold spark effects. 5. LONG LASTING LIFE: The cold spark firework machine lasts for about 6 hours and the charging time is only 2 hours. The long battery life can meet the needs of various occasions. Specification: Item Type: Cold Spark Firework Machine Material: ABS Light Source Type: Cold Firework Firework Machine Battery: Lithium Battery, Single Battery Capacity 250mah (Built In) Remote Control Battery: Dry Battery, Single Battery Capacity 50mah (Built In) Remote Control Distance: About 40m or 131.2ft Power Supply Voltage: 4.2v Ignition Voltage: 4.2v . Package List: 1 x Aircraft Box 10 x Base 1 x Charger 1 x Remote Control 1 x Group Remote Control 1 x Instruction Manual Note: The range is about 6 hours. Charging time is 2 hours and should not be too long. In order to ensure sufficient power it is recommended to charge before use. The temperature of the base will be slightly high when using, do not touch it directly with your hands. It is recommended to put it on the open ground when using.