ROCKBROS A2 115 dB Bicycle Bell with Anti-Theft Alarm and Wireless Remote, USB-C Rechargeable, IPX5 Waterproof, Black

The ROCKBROS A2 redefines bicycle security by combining a piercing 115 dB alarm with a functional bell and a wireless remote. Unlike ordinary bells, it actively deters theft with vibration-triggered alerts while offering four distinct ring tones for courteous passing. The remote lets you arm, disarm, or ring from up to 20 meters away, so you can warn off a thief before you even reach your bike.

Highlights

• 115 dB anti-theft alarm with 3-level vibration sensitivity
• Wireless remote control (range up to 20 m) for arming, disarming, and ringing
• 4 selectable bell tones for different situations
• USB-C rechargeable 250 mAh battery (approx. 1.5 h charge)
• IPX5 waterproof rating for all-weather reliability
• Tool-free silicone strap mounting fits most handlebars

In daily use

Mount the A2 on your handlebar with the silicone strap—no tools needed. Press the remote to arm the alarm; any vibration will trigger a loud 115 dB siren, scaring off potential thieves. When you return, disarm it remotely. For normal riding, use the bell button on the remote or the unit to choose one of four tones. The rechargeable battery lasts up to 60 days in alarm standby mode, so you won't be charging constantly. The IPX5 rating means rain or splashes won't affect performance.

Full specifications

• Product type: Bicycle bell & anti-theft alarm
• Alarm volume: 115 dB
• Bell tones: 4 distinct sounds
• Control method: Wireless remote control
• Remote control range: Up to 20 m
• Charging port: USB-C
• Main unit battery: 250 mAh lithium-ion
• Remote battery: CR2032 button cell
• Charging time: Approx. 1.5 hours
• Standby time (alarm mode): Up to 60 days
• Standby time (bell mode): Up to 30 days
• Waterproof rating: IPX5
• Material: ABS + PC
• Mounting: Silicone strap (handlebar)
• Alarm features: Vibration sensor, 3-level sensitivity
• Operating temperature: -20°C to 60°C
• Input voltage/current: 5V/1A

Final note

With its dual function as a loud alarm and a polite bell, the ROCKBROS A2 offers practical security and everyday convenience for any cyclist.