H51/H51N ÖÁ×ðÐͶú™C
Plantronics ¡¡ Supra H51ÖÁ×ðÐÍ ¡¡
- Adjustable headband
- Lightweight 1.7 ounce
- Patented SoundGuard circuity
- ƒÈ(n¨¨i)ÖÃÜ›‰|£¬ÅäŽ§Êæßm
- ÒôÙ|(zh¨¬)¼Ñ

Plantronics ¡¡Supra NC H51NŸoësÒô¶ú™C
- Noise candelling ¡¡¡¡circuirty/microphone ¡¡
- Unidirectional microphone on flexible boom reduces transmission
of background noise up to 75% ¡¡
- ‚äÓÐÔëÒôœp•¹¦ÄÜ ¡¡
- Õ{(di¨¤o)Ý^ÈÝÒ×£¬Åä´÷Êæßm
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