We compared two loud bike bells: the Greallthy Full-Metal Bike Bell and the ROCKBROS 120dB Bike Bell.

What we looked at

Materials, stated volume, handlebar fit, and price.

The verdict

If you want a small, full-metal bell with a stated 80dB tone and two mounting brackets for 22.2 to 31.8mm bars, the Greallthy is the pick at £13.95. If you would rather have a retro copper alloy bell with a stated 120dB tone for £13.99, just 4p more, the ROCKBROS is the alternative.