For use with the Nikon D2H, D2X, or D2Xs digital SLR Cameras and the optional WT-1 wireless transmitter. The WA-E1 extends the maximum range of direct wireless transfer to about 500 ft. ( 150 m ). Item Specifications: Product Description: Nikon WA-E1 - Wi-Fi antenna Device Type: Wi-Fi antenna Recommended Use: Digital camera wireless transmitter