Sony SRS-XB40 has a built-in multi-coloured line light, speaker lights and a flashing strobe.
It features 24 hours of battery life and claims to be a 'mini-disco on the move'.
It shows the apes have at least 25 signals or gestures for 'I want to play', for example - ranging from a back roll and somersault, to a yank of their hair or a bite of the air.
When people are talking in romantic setting, sticking out the tongue can be a sign of lust. By oneself, pretty much the only thing the tongue can lick is the lips (although a more hidden way of this is licking the teeth).
Lip-licking may indicate desire, perhaps for another person and perhaps for food. Licking lips can also be an indicator of stress as the effects of tension reduce saliva flow and dry out the mouth.
Brushing with a hand means they want something to stop, while embracing and pulling at the same time means they want another ape to walk with them.
Other gestures include hitting the ground, swatting, grabbing, and dangling upside down.
Although studies of great ape body language have been carried out before, none has focused so closely on the intentional meanings of specific gestures.
The findings don't just reveal how apes communicate - they also shed light on the origins of human speech millions of years ago.
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If an orangutan blows a raspberry, smacks you on the side of your body or gives you a nip on the arm, don't worry. For the great apes communicate intelligently using an unspoken vocabulary of gestures, movements and smacks, scientists say.
They found 40 that were used frequently enough to work out their meaning.