Haven't returned yet. I'll check at work. amazon|aliexpress support well done. The resource works, they answer questions, give good recommendations, etc. But the seller did not contact me either for support or for me. Its pros: Good time. Received the goods on time, packed to last, tired of unpacking. I didn’t check it at work, I didn’t do any verification, I can’t say anything about the need for adjustment. I will write you later. Has some cons: The device itself did not match the description. There is no compensator latch button (one of the criteria why I preferred the old ada basis attorney).