ROCKBROS Bike Light LED Bicycle IPx6 Waterproof USB Charging Taillight Cycling Q5 Flashlight Auto Brake Sensing Smart Rear Light

My own readings, in pounds. The first point is the first reading I took; after that a point goes on only when a reading comes in 5% or more away from the one before it, which is why the gaps are uneven. The price above is a later reading that landed less than 5% from the last point, so it has no bar of its own.