No need to describe it you know what it does 

Comes with raised bars and tongue groove for easy placement 

Free Australia Wide Postage please note no responsibility is taken for lost items.

Random colours posted 

1. Hold the call either between you thumb and index finger Or with your lips on the raised bars that the long edge with the lanyard hole hole is facing upwards.
2. Place the call so the folded edge and both holes are within your mouth.
3. Exhale soft or hard to vary the call pitch – and imagine the air coming from your mouth through the two holes in the call. This WILL NOT make the desired noise but you’re almost there…
4. Whilst exhaling, place your tongue against the tongue ridge on the tip of the call – this will force air to go through both holes in the call – and the interference between the two channels of air will cause the call to make it’s distinct sound. You may need to experiment with the position of your tongue and the bite down pressure to enable you to get different sounds.