Review on YOSKY Smart Bike Tail Light - Ultra Bright LED Warning Rechargeable Safety Red Taillight with Brake Sensing, Waterproof Auto On/Off Sensor - Bicycle Rear Light by Eric Salem

Completely dissatisfied with my purchase. My main reason for this purchase was the brake light feature. It doesn't work at all! The brake light lights up almost 100%. I bought two of these for two different bikes and they both have the same issues. I have to say the customer service is exceptional. Within an hour of raising my complaint with the seller, they asked for my address to ship two new units. I'm not sure if they will be any better, but the support team's speed and response is well above average.