SUPER LOUD BICYCLE HORN: 140db loud bike bells for adults, can make a loud and clear sound, enough to alert trucks, cars and pedestrians to your presence and ride safely. Meanwhile the design is compact and doesn't take up much space6 ALARMING SOUNDS ADJUSTABLE: You can choose the right horn sound according to different environments. You can choose soft bike horn kids adults sound when riding in a quiet environment, and in a noisy environment you can set a loud and shrill sound for a better warning effectINDEPENDENT DUAL SWITCH: Bike horns and light remote switch can be installed next to the thumb for easy operation, no need to look for the button frequently, when pressing the switch your hand is still on the handlebar stem to ensure safetyCONFIDENT RIDING: LED Bike light horn has 8 light modes (low light/strong light/quick flash/SOS mode/breathing light), 8 LED warning lights and 4 high brightness light beads, different light effects greatly improve your chances of being noticed at nightRECHARGEABLE & WATERPROOF: Electric bicycle bell built-in 1200mAh high-capacity lithium battery, no frequent replacement of battery trouble, longer service life, longer running time. IPX6 waterproof, adapt to all kinds of weather, so you can travel all the wayEASY TO INSTALL & QUICK TO REMOVE: No tools required, easy to install and secure with the included straps, the bicycle horn for adult bikes comes with non-slip spacers to ensure it won't wobble. Easily disassembles in seconds, fits all sizes of handlebar bars