Z20 PRO Seatpost Version:Version 1 The built-in chip will trigger

The built-in chip will trigger a louder alarm (110 dB) than other locks

the most important feature is that the disc lock has a vibration alarm sensor

The lightweight portable lock gives you peace of mind knowing your bike is secure

you don't have to worry about your bike being unsafe

Make up the difference

Z20 PRO Seatpost Version:Version 1 The built-in chip will triggerNOTE: The Z20 PRO is available in two different seatpost lengths and thicknesses and is not interchangeable between versions. Please check which version of Z20 PRO you have before purchasing. Version 1: Length: 55cm Version 2: Length: 35cm Please do not order if you have any concerns as version one is the previous version and needs to be customised after purchase, so the waiting time is slightly longer. Please do not hesitate to contact our customer