Amazon sent me immediately another I'll test The machine is very quiet and worked well at least during the time she worked at it's best on Sunday but the fixing of the guide unsatisfactory I would write a comment more developed from the most conclusive test of its replacement. However having already tested the battery and recharge, I am satisfied with autonomy but advises you to purchase 2 or 3 batteries especially if you are away from any electrical source and a 12V-220V converter for cars