Very good. Everything is fine. Works. There's a nuance. On batteries there will be no problems, but on batteries a small trouble. Spring contacts are located in one place, inside the case, and the batteries need to be inserted up-down. The batteries plus wide, so there is a contact, and the batteries plus is a small piptic and it may not touch the spring. I got it, it works. If not, you can put on a plus battery to put on a suitable washer to increase the contact area. Seller respect.