Mathieu Lehanneur chose the shape of Boom Boom to maximise the achievable volume while keeping the speaker small enough to fit in the palm of a hand.
"One of the challenges of Boom Boom was to increase the inside volume without increase the size of the product itself," Lehanneur told Dezeen. "In terms of sound the more inside volume you get, the more generous sound you create."
Sound is emitted from the half of the object perforated with small holes. The body of the speaker is built from recycled plastic, which is wrapped in a silicone skin on the other half.
"If we are comparing it to a fruit we could say that electronic components are the pips, recyclable plastic is the pulp and silicone is the removable skin," Lehanneur told Dezeen.
The speaker turns on at the touch of a fingertip and can connect to any Bluetooth-enabled device. Volume is controlled by pressing illuminated buttons on the single dark section.
The speaker can be used for conference calls and also talks to users to tell them when it is ready to play music and when the battery is low. By installing the Boom Boom app – available for Apple iOS or Android devices – users are able to set their preferred language for the interface.
A detachable strap can be used to secure the object to the wrist, for use when walking about with the speaker in hand, or to another object.
Boom Boom comes in white, khaki or bordeaux colours and is produced by audio company Binauric.
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