iBall Collar B9 Wireless Earphones于 2015 年 7 月 29 日首次发布。优雅的黑色设计和 70.00 克的重量使iBall Collar B9 Wireless Earphones成为一款美观舒适的耳机。此版本的 iBall 耳机支持蓝牙 4.1。
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