Features:
1. Good performance of high-decibel loud sound, one-button press to attract attention and alarm the walkers
2. Also with anti-theft function, alarms & vibrates with loud sound when bike be shaken
3. Password controlled, default password is "0000", its password is changeable
4. Waterproof and mini design, convenient and practical, fit for bicycle, electric bike and etc.

Specifications:
Mounting-Pipe Diameter: Approx. 2.5cm
Default Password: 0000
Power Supply: 4 X AG13 Button Battery ( Included )
Material: Plastic
Size: 6 * 4 cm ( Length * Diameter )
Weight: 100g
Color: Black

Usage:
Anti-theft Mode
-Long-press "0" for 2 seconds, 1 second later, "Dee" 1 sound be heard; 2 seconds later, "Dee, Dee" 2 sounds heard, then undo the press, after 3 seconds, "Dee--" 1 long sound will be heard, and the Anti-theft Mode is ON.
-When bike be shaken, it alarms for 15 seconds, then stops, while the Anti-theft Mode is still ON.
-To delay the Anti-theft Mode, please first long press the Alarm Button, then enter the password; To turn off the Anti-theft Mode, please directly enter the password.

Password's Changing
-Long-press "3" for 3 seconds ( "Dee" sound be heard ), enter default password "0000".
-"Dee, Dee" 2 short sounds be heard, then enter your new password ( 4 digits ).
-"Dee" 1 long sound be heard, repeat your new password again.
-"Dee, Dee" 2 long sounds be heard, the new password is available.

Package Content:
1 x Bicycle Horn and Alarm Lock( BatteryIncluded )
2 x Mounting Belt