是因为当时没有蓝牙技术，还是有其他因素？
Was it because Bluetooth was not available at the time, or some other reason?
没有蓝牙或无线氮，但这些对我来说并不重要。
No bluetooth or wireless n, but these were not important to me.
它其实是一个很核心的技术,在两个设备间建立快速连接,而如果没有蓝牙，就不会相连。
It is actually a very core technology for these types of quick connections between two decives that might not have been paired previously.
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