Product Comparison C1 Master Headset Add to Cart C1 Remote Headset Add to Cart C1 Pro Remote Headset Add to Cart Solidcom C1 8S Buying Options Solidcom C1 9SHUB Add to Cart Single HUB Add to Cart Wired Headset for HUB Add to Cart Customer Reviews 3.9 out of 5 stars 5 4.6 out of 5 stars 298 4.4 out of 5 stars 151 4.6 out of 5 stars 298 4.6 out of 5 stars 298 5.0 out of 5 stars 4 — Price $219.00$219.00 $199.00$199.00 $339.00$339.00 — $3,799.00$3,799.00 $1,699.00$1,699.00 $99.00$99.00 Full Duplex ✔ ✔ ✔ ✔ ✔ ✔ ✔ PTT ✘ ✘ ✔ ✘ ✘ ✘ ✘ ENC ✘ ✘ ✔ ✘ ✘ ✘ ✘ With HUB ✘ ✘ ✘ ✘ ✔ ✔ ✘ Main Earphone 1 — — 1 1 — 1 Remote Earphone — 1 1 7 8 — — Battery 2 2 2 16 16 — — How to Upgrade with A 2-User Set How to Upgrade with A 3-User Set How to Upgrade with A 4-User Set How to Upgrade with A 6-User Set How to Upgrade with A 8-User Set Note:Pair the original remote headsets with the master station via a USB-C. Master headset can't pair to Hub, Since it has the same function as the Hub. With hub you could interconnect with multiple Solidcom C1 Hub or other intercom system.