Satisfied with most of the parts. The only part I do not like is the additional switch built-into the cable between the light and the battery. It's quite large and I need to be attach it separately with rubber bands on the loupe (not the best innovative design with too many spare parts) I have XV1 frame from Orascoptic, so its design is not the best for attaching an extra switch on the frame. One way to polish this poor design is not to have the switch designed so close to the loupe frame, but somewhere closer to the pocket where you have the metal clip. The metal clip serves its purpose to somewhat prevent the cable from running wildly around the dentist. Also the main difference between wired and wireless is the presence of the wire. If you could strengthen the cable with an additional silicone layer. It will not only strengthen its durability, but also offer a distinctive design for each dentist