Spare, Cable assy, Coil Cord 10ft, 2.5mm to QD While the Engage 65 connects

While the Engage 65 connects to two devices

SOHO and Domestic applications Optional Mute or Push-to-talk Handset Headset Savvy Features: Mute Key works on Headset Push button earpiece Volume Control Built-in Headset Amplifier suits a wide range of headset types Headset Mic Adjustment allows any headset mic type Headset Cable Polarity Switch - suits any headset cord Silent Ringing mode selectable so that incoming calls ring only in the headset to reduce call centre ambient noise Trainee/supervisor double jacking mode Mid-call mode support - change between Headset

the Engage 75 Mono is built with your comfort in mind

W710 & W720

Spare, Cable assy, Coil Cord 10ft, 2.5mm to QD While the Engage 65 connectsPlantronics QD 2. 5mm Cable