Design: 1  Flex-Weave Cover â The Gates B69 v-belt is a wrapped belt that features a patented single layer fabric construction for longer cover life. 2  The cover protects the belt core from oil dirt and heat. 3  The wrapped cover also makes the belt suitable for clutching applications.
Light Fidelity (Li-Fi) is a bidirectional, high-speed and fully networked wireless communication technology similar to Wi-Fi.
Hi-Fi is a term that was invented to distinguish the cheap from expensive equipment in the 50's. It doesn't actually refer to anything. It's a marketing word and it's been obsolete for 40 years. The cheapest MP3 player you can find is Hi-Fi. I think it's pretty funny to see it actually being defended as an actual thing in the 21st century.