Specification: <br> Remote Control<br> Different output cable can be connect with different brand camera<br> The product surface is using high-end stain finish, it is more artistic<br> Using FSK 2.4 GHz wireless controls system which more reliability and stability<br> Using AAA battery, it iss easy to buy and affordable<br> Transmitter only uses lower than 2mA under working status. Receiver only uses lower than 2mA under working status<br> 2pcs of battery working time is up to 400 hours, which is 5X save power compare with the similar product<br><br><b>Please note: Package does not contain batteries.</b><br><br> <b>Important tips: </b><br> 1. Either install the receiver on the camera's hot-shoe or don't install the receiver on the camera's hot-shoe, the remote controller works well.<br> 2. Receiver's hot-shoe only fits Sony New ISO hot-shoe, but this doesn't affect the product's function.