West Biking Compass Bell Bike Bells Mountain Bicycle Riding equipment Bikes Horn Alarm Cycling Accessories 1. Compass just decorative, instructions for reference purposes only, are not very accurate. 2. Beautiful Appearance, Meticulous Workmanship, Waterproof design. 3. Easy to install, it can be installed on most model bike. 4. Press the speaker can be issued in six different voices. 5. Small Volume ,Large Ring Tones, Sound is also very outstanding.