7 Sounds Ultra-loud Electronic Bicycle Bell Bike Horn Siren

7 Sounds Ultra-loud Electronic Bicycle Bell Bike Horn Siren Description: Fine workmanship and waterproof Easy to install and fit for all bicycles Specification: Ring type: A variety of different resounding sounds,such as car horn-type sound,ambulance-style Material: Reinforced plastics,electronic components Power: 9V battery ( 1 x battery included) Size: 8.8*4.0*5.4CM (3.5 x 1.5 x 2") Length of the control line: 20CM Weight: 115g Color: Black Package Included: 1 X Bicycle Ultra-loud Bell 1 X 9V Battery 1 X Holder (25mm approx. )