•Anti-theft & Loud Sound--This bike bell has the alarm function,no worry about missing your bike. 120 DB Loud sound warn others better when cycling outdoors.
•Waterproof & Rechargeable--IPX4 daily waterproof, no worry about cycling in the rainy days. Fast charging design, charging one hour can used about 1 month.
•Two Sounds to choose.
•Ultralight & Easy oprate