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Within that small footprint, the device contains a flash memory drive, tiny battery, electronic components, Bluetooth capabilities and two tiny microphones -- one facing inward toward the body and another facing outward toward the exterior.

The split clears years of uncertainty over Western Digital's flash memory unit that was built through its $19 billion purchase of SanDisk in 2016 and caters to the smartphone and computer industries.

The move clears years of uncertainty over Western Digital's flash memory unit that was built through its $19 billion purchase of SanDisk in 2016 and caters to the smartphone and computer industries.

The companies were pursuing a merger in the face of a global chip glut and weak demand for flash memory chips, which have increased pressure on chipmakers to consolidate.

For example, a January tender for a "smart public security" project in the southern city of Taishan explicitly requested flash memory chips be domestically produced, assigning it almost 200,000 yuan.