I don’t know about you, but I have never needed a mouse to interact with my smartphone. But having the option is ideal. Thanko has a trackball mouse with an OTG cable to let you interact with your OTG-enabled smartphone anywhere. You can put the mouse on a desk or hold it in one hand to operate it.
More gadgets like this: here
【スマホもOK!ゴロ寝トラックボールマウス】 スマホで使ってみた サンコーレアモノショップ
The above video shows what this device has to offer. More information is available on Thanko.
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