The 7 best weird tech deals still available from Prime Day

• Current price: $11.20
• Original price: $14

Yes, a USB-C cable is on this list. But it's no ordinary USB cable. This one from Knaive has a built-in LED display, which sounds like overkill at first, but is pure genius when you put it into practice. When the cable is used to charge your phone, tablet, or laptop, it'll display how much wattage is being distributed. 

That way, you'll always know if your device is charging optimally. If the wattage value is lower than expected, that may be a sign to switch to a more compatible power adapter.