<https://www.technologyx.com/pc-hardware/peripherals/genius-releases-ring-pointer-aimed-at-making-presentations-seamless/>
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<https://www.technologyx.com/pc-hardware/peripherals/genius-releases-ring-pointer-aimed-at-making-presentations-seamless/>
<http://www.technologyx.com/pc-hardware/peripherals/genius-releases-ring-pointer-aimed-at-making-presentations-seamless/>