The WR-R10 plugs into a camera's accessory port. Since the D4 does not have an accessory port but instead has a 10-pin connector you will need the WR-A10 adapter. The WR-A10 fits into the 10-pin connector and the WR-R10 fits into the WR-A10. Since you need both pieces you should get the WR-10 set which includes the WR-T10 transmitter as well as the WR-R10 and the WR-A10.
For more details see the WR-10 manual which can be downloaded from this address:http://www.nikonusa.com/pdf/manuals...
answered 2 years, 6 months ago
2 years, 6 months ago