Review on 🚲 Enhanced Safety and Convenience: Electric Bike Horn Electronic Bicycle Bell with 4 Soft Sound Modes, Rechargeable Battery, and Waterproof Design for Women, Men, Kids' Tricycles, Scooters, BMX, and MTB by James Hess

has 4 different sounds, one of which attracts attention, as well as two horns imitating a bicycle bell. You can mount the horn button anywhere on your bike handlebars so that it can be easily pressed with your thumb near your hand on the handlebar grip. The beep volume can be set to low or high. It's USB rechargeable, so you don't have to change the battery. If you remember to turn it off after riding, you'll have a dozen or more rides before you need to recharge the battery.