Quality of work: It lasts a very good amount of time , for the charger, my phone was on 3% I put it on charge and in an hour it got to 50% it was pretty good knowing I would only be out for about 1hour and a half Size: It’s the size of my hand and there not very big,it fits in my handbag along with my phone & more Very good

These are greatvif u suffer from cold hands or carpul tunnel