Cannot recommend Swytch – the manufacturing and shipping is longer than you will be told- the delivery very uncommunicative and time wasting which would be fine if it actually worked well. The plus side is that it is easy to install. Negative side is that it is very underpowered (the standard one) does not get a 96kg me up a hill on a brompton. The motor started cutting out after 3 days and despite repeated requests to Swytch for tech help nothing received- so it is both unreliable and useless– I will change this review if they ever get back to me and resolve the issue.