Super loud ringing: 120 decibels loud warning sound allows you to move freely on noisy streets. Just double-click to change the sound mode between 4 different ringtones.

200mah lithium-ion battery: The built-in 200mah lithium-ion battery. Press 100 times a day to keep the bike bell on for 40 days. Charges via USB and you can fully charge in 20 minutes.

Warning: This powerful bicycle bell has an anti-theft function. If the anti-theft function is activated, an alarm is automatically triggered when the bike is moved. Press and hold the left button to turn on the alarm, and press and hold the right button to turn off the alarm.

Easy installation: The bicycle bell is securely attached with silicone straps. Installation and disassembly are convenient and quick, and it is applicable to handlebars with different diameters (approximately 22.2 mm ~ 31.8 mm).

Small and practical: small and delicate bicycle belt approximately 60*34mm/2.36*1.34in. It can be hidden inside the handlebars without affecting the replacement of handlebar brakes or the function of other attachments. Therefore, it is perfect for your cycling activities.