The Rockbros 34210028005 is designed for optimal performance, featuring a loud 100 dB sound. It is equipped with advanced technology for enhanced functionality. Product specifications include a sound level of 100 dB and a weight of 52.4 grams, making it lightweight and easy to use. Rockbros is known for its quality, and this model is no exception, offering reliable performance. The 100 dB sound ensures that you will be heard clearly, whether you are biking or engaging in other activities. The Rockbros 34210028005 is ideal for those who value both functionality and style.