[Extra big size clear balloons] These clear bobo balloons can be inflated to a size of 12-22 inches in diameter (55cm). The size before inflating is 9.5 inches in diameter (24cm) [Batteries already installed] LED string lights for balloons already have batteries installed and on/off switch to control. Batteries are protected by a small tab that can be removed before use. The decorative lighting on the balloons can last for 24 on full brightness, and can last for a further 48 hours on a reduced brightness [Easier to stretch out big] Clear Bobo balloons are harder to stretch than regular balloons, however lightsfever balloons are made for extra elasticity so they can stretch big and a round shape without popping guaranteed. If you are unhappy with the quality of the balloons message our store directly, money back no questions asked [Can be used with helium or air, or balloon sticks] Extra big and stretchy versatile bobo balloons are good for helium and air. They are also compatible with the our DIY balloons sticks and stands kits on our amazon store, perfect table top decorations for thanksgiving and xmas table decorations [Long LED string lights] for each balloon, light up string lights around 10 feet (300cm) long of a rustic warm white color. When using helium balloons can float around 6 feet from the floor with the LED string light hanging down anchoring the balloons. Warm white color can suit a variety of party themes, such as birthdays, thanks giving decorations, thanks giving balloons, Christmas parties and rustic wedding party balloons and bachelorette parties warm white color LED balloons are a perfect choice for a classy and colorful event. light up bobo balloons with batteries included. LED Balloons provide decorative lighting and a wow factor that will ensure numerous compliments for your party decorations. The clear balloons look really enchanting as thousands of tiny warm white lights mimic fireflies in the night. Tips for using helium; When using helium make sure to inflate the balloons larger than 14 inches in diameter to ensure they can hold the weight of the LED lights.ips for using air; When using air the balloons can stay inflated for weeks. A popular party decoration choice is to attach the battery boxes to the ceiling, and let the balloons hang down upside. Perfect choice as wedding balloons, or large birthday party balloons,bachelorette party decorations that need a lot of lighting décor to fill a large space.What is the difference between these balloons and normal latex balloons?Latex balloons are more stretchy but can not achieve 100% clear transparency like bobo balloons. Can they be reused? The LED firefly string lights can be reused. Best to visit our amazon store for a refill pack of 50 bobo balloons.What events are they suitable for?Perfect choice for xmas balloons, birthday balloons, independence day decorations, graduation baloons, great for bachelorette party decorations, wedding balloons, Halloween party balloons,4th of July decorative lighting for garden parties. How long will the helium filled balloons float for?This depends on variables such as the quality of the helium tank, how well the knot was sealed. A safe estimation is 10 hours. Use one of the extra balloon to do a test run a few days before your event. LED lights are not waterproof. Keep away from water