Sennheiser MM400X Wireless Headphones于 2012 年 11 月 8 日首次发布。优雅的黑色设计与 105.00g 的重量使Sennheiser MM400X Wireless Headphones成为一款美观舒适的耳机。它的电池寿命为 10 小时，可帮助您在漫长的活动日中舒适地使用它。
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