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H51/H51N 至尊型耳機(jī)

Plantronics 　 Supra H51至尊型 　

• Adjustable headband
• Lightweight 1.7 ounce
• Patented SoundGuard circuity
• 內(nèi)置軟墊，配帶舒適
• 音質(zhì)佳

Plantronics 　Supra NC H51N無(wú)雜音耳機(jī)

• Noise candelling 　　circuirty/microphone 　
• Unidirectional microphone on flexible boom reduces transmission of background noise up to 75% 　
• 備有噪音減聲功能 　
• 調(diào)較容易，配戴舒適