Audio and Battery
In terms of audio functions, the KB770 was equipped with a standard loudspeaker but lacked the 3.5mm headphone jack, which might have been a limitation for users wanting to use their own headphones. The device's removable Li-Ion 1000 mAh battery provided stand-by time of up to 300 hours and talk time of up to 4 hours, which gave it a respectable battery life considering its multimedia capabilities.