The boya universal adapter by-k3 3.5mm trrs to lightning is an adapter cable that you can use to record sounds with an iphone, ipad or ipod touch with lightning input. the cable is apple mfi (made for iphone) certified and has a length of 60 mm. on one side there is a 3.5mm female jackplug (trrs) and on the other side the cable has a male lightning connector. compared to other cables in the market, you benefit from a more durable, thicker cable and therefore have a smaller chance of cable breakage. Usage boya universal adapter by-k3 3.5mm trrs to lightning You use the by-k3 in combination with an external microphone and an iphone or ipad with lightning input. due to its small size, you can easily take the adapter with you wherever you go. so you can always conduct interviews or report live, even in unexpected situations. via the 3.5 mm female jackplug you can attach the adapter to an external microphone (see optional accessories). you then connect the lightning connector to your iphone or ipad.