• The ringtone can reach 80 decibels and can be heard clearly in noisy crowds
• The compact shape, and does not affect the operation of the handlebar brake, shifting, etc.
• The copper shell material has high hardness, and the sound is crisp and long
• The micro-arc design is smooth and does not hurt the hand, easy and labor-saving
• Copper outer layer, anti-rust and waterproof paint finish. Long service life and strong durability

Specifications:

• Materials: 7075T+Copper
• Decibel: 80dB
• Size: About 6.5x4.5x1.5cm
• Net Weight: About 36g
• Fit For: Road Bike/MTB/Folding Bike, etc.
• Applicable Diameter: 22-31.8mm