They'll Hear You Before They See You 

Features:

• Loud and clear sound
• Low power consumption and high performance
• One-step installation
• Durable, with fixing bracket waterproof cover

• Snail horn, loud, beautiful appearance
• Suitable for all 12V Cars, Trucks, & Motorcycles

Specification:

Operating voltage: 12V DC

Current: 4A

Sound Output: 300dB

Frequency: 510hz

Waterproof: Yes

Package Includes 

1* Air Horn