Product: Bicycle Bell Colors: black, blue, purple, gold, green, red, silver Material: Aluminum alloy ABS Whether to use battery: No Speaker volume: 90 decibels Installation method: buckle (caliber 21 -23mm) Product accessories: none Product weight: 27.5g Product size: 5.5*5.5*5.5cm Features: Ergonomic picks, waterproof and rust-proof, small size and large volume Tips:We serve you wholeheartedly, and the customer service online will answer any questions about your purchase. Specifications: 1. [100% brand new quality] 100% brand new quality.   2. [Loud volume] Alloy steel material, with higher hardness, crisp and long sound, makes it more convenient to remind when riding.   3. [Ergonomic pick] Rounded radian is smooth and does not hurt your hands, ringing the bell is more labor-saving and comfortable, and you can hear the bell when it fluctuates gently.   4. [Safe and stable] The double screw fixing base is firmer and is suitable for most bicycle handlebars on the market.   5. [Waterproof and Rustproof] The steel outer layer is treated with rust-proof and waterproof paint, which has long service life and strong durability.   6. [Easy to carry] It can be installed on the handlebars, without affecting braking/shifting or other operations, and without increasing the riding burden. Package Included: 1*bicycle bell