Worked good for one day.
The first night, it worked great. Every night after although, it got progressively worse. The clip wouldn't stay hooked. It kept coming disconnected. Then the conecters wouldn't touch unless it was put on in a specific way. Finally the cord came out of the arm band while he was sleeping. I give it two stars because it did at one point work great. Maybe I received a lemon? Who knows. I know one thing, I'm pretty disappointed in the build quality of this item
Rating: 2 stars