DescriptionThis is a bike electronic horn, made of high-quality materials, safe and durable. It is easy to assemble and disassemble, no tools are needed, and the operation is very convenient. There are 3 different ringtones to choose from, which can remind others when you are raining or when you turn, so that you can ride more safely.Features-Color: Black. -Material: Silicone. -Size: About12.50X5.50X4.30cm/4.91X2.16X1.69inch. -Easy to assemble and disassemble, no tools are required, and the operation is more convenient. -Three bell sounds are optional, very practical and durable. -The silicone sleeve has high elasticity and can be adjusted to different diameters. -Be able to remind others to make you a safer ride. -It is a very professional and indispensable bike accessory.