What can you do with a mug? Stare at it, use it to drink your beverages, sometime to store up pens and stationery (many people do that). The "Cooler" mug is surely a lot cooler than other mugs which can only help you do the above mentioned. It is a mug and also a speaker with an audio cable. The On/Off, LED light turns red when listening to music or its connected to the USB .
Features:
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Main functions: Coffee beverages cup and Mini music speaker
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Use it to drink your beverages, or store up pens and stationery
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Run time: 3-4 hours
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Power supply: PC USB port 5V
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Battery: 3 x AAA (Not Included)
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Sound power: 3W, 5 ohm 100Hz
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Dimension: 92 x 62 153mm