Small, modern and effective - a bicycle bell from ROCKBROS. You'll be surprised by its lightness and quality of workmanship. A huge advantage of the bell is its small size. It takes up only 3 cm of space on your handlebars. To activate it, simply press a button. The bell has three different tones. It's made of silicone rubber, making it waterproof and compatible with any type of handlebar. By pressing the button for 3 seconds you can change the sound to another one. The sound volume is 90db, which means that even on a very busy street your signal will be heard. Specification: Weight: approx. 33g 10 cm x 3 cm x 3.5 cm Material: flexible silicone gel Battery: 2-cell type CR2 - INCLUDED!