Features	Benefits
Noise Cancelling microphones (excl SH 230)	Less background noise transmitted - more professional
USB / VoIP compatible	Future proof solution
Metal C clamp (excl SH 230) Teflon parts Replacement parts Kevlar coated cables	Less breakages Less expenses on repairs
Acoustic foam membrane on leatherette ear pads	Better clarity of call - less agent repetition
3 yr warranty (excl SH 230 - 2 yr warranty)	Worry-free ownership
Easy disconnect functionality	No need to remove headset when moving away from desk