Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Waste of Time - Unusable

Back here to return this waste of time. A list of annoyances you'll probably want to avoid:1. Doesn't work with many models, including mine. If it does work though, setup is insanely annoying!2. The door to open the jumpers is extremely hard to open. Jumpers are a pain in the butt to change.3. Direction is INSANELY overdone and confusing. Think of opening a mac product, then think of the complete opposite of that.RETURN.