Features: - : With lights, a small helmet, squeezing can make a sound. A variety of functions, can be used as a bicycle, motorcycle bell, can also be placed on scooters and strollers. It can also be used as a patient pager, and can also be placed on a wheelchair to remind others with duck pressing or lighting. It can alsobe used as a children's toy, there are more functions waiting for you to discover. Easy to install, just stretch the bottom of the telescopic rope and buckle it on the bicycle or motorcycle and helmet. Just squeeze the duck when the bell rings. There are 2 lighting modes, always bright and flashing. Can not charge, you can replace the button battery. Note: With a propeller that can rotate with the wind, the color of the helmet is sent randomly. The helmet is detachable. If you dont like it, you can take off the helmet. The duck without a helmet is also very cute.