The Intra Drive is a new electric motor for bicycles that distinguishes itself through its compatibility with existing systems and its integrated gearbox.https://www.notebookcheck.net/Intra-Drive-Innovative-e-bike-mid-motor-comes-with-a-gearbox-and-can-also-be-easily-retrofitted.774022.0.html
Not enough power for steep mountainous terrain. 350w peak is a joke. A Bafang Ultra is will run at 1500w + peak. It is infinitely easier and probably much cheaper to maintain a conventional derailleur system.