Review on 🚴 LIYOTD Super Bright Bike Lights Front and Back - USB C Rechargeable 1200 Lumens Bicycle Light Set with 6400mAh Battery - Ideal for Night Riding, Road Cycling, and Mountain Biking - LED Cycling Accessories by Roy Boone

I've asked for a replacement because the light makes a fairly audible coil whine at medium or low volume (reference video for noise). In the picture, both were set to maximum brightness, but one had a low battery and the other was 100% charged. This means that this light will lose its brightness when the battery level gets low. After the replacement device was fully charged, it was just as bright as the first. The separate rear light is rather weak, light and looks a bit cheap. on the side but it works. If a small coil whistle doesn't bother you, this is still a good light, especially for the price.