When JBL first announced its Tour Pro 2 earbuds ($250, £220, AU$350) in January, they got a lot of attention for having something we hadn’t seen in a set of earbuds before: a full color touchscreen display embedded in the case that allows you to access the earbuds’ key features and control playback as well as adjust volume levels. Pretty cool, but is that touchscreen useful or just a gimmick? 
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