Compatible with Plantronics VOYAGER 5200, Encore Pro 720, Encore Pro HW540, CS520-XD, CS510-XD, BackBeat FIT505, BackBeat FIT500 case. Compatible with Plantronics Blackwire C3210, C3220, C3225, C5220, 5220, 5210, 3225, 3220, 3215, 3210, 720, 710, 620, 610, C225, 215, C220, C210, 7225, HW520, Voyager 4320, Voyager 4310, Voyager Focus 2 UC, VOYAGER FOCUS UC case.
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