I 'bought these lights, after using, since years, the Knog Blinder Arc 640 (still working well). My son needed good lights for evening trainings and, after my good experience with the brand, I went directly to Knog, we are very happy with them.
These are solidly built lights. The Blinder 900 is rock solid on a GoPro mount. It just goes and goes on the day strobe setting. The modes on the Blinder square are good fun. Even on the Eco mode, it's very bright. I usually use it on Speed-up flash mode, but mess around a bit, too. Highly recommended lights.
Just recently bought Blinder 900 & Blinder Square Rear Bike Light Set. I had my doubts if the 900 version would suffice on my early morning or night rides. Well, I was wrong. The blinder is very bright even at the 2nd setting so I can conserve battery. The Square rear bike light is very helpful and awesome. It has good size and keeps me visible to traffic. I feel safer with these lights on my rides.
I’ve always liked Knogg products, they are worth the investment. I’ve had the Blinder Road 400 and the blinder Rear 100, for more than 6 years and they still work as new. Now I wanted more power for trail/street riding and got the Blinder 900 and the Blinder Square 100 set. They are powerful, very well built and easy to handle.
After buying them I compared them to some Magic Shine lamps that are supposed to have better battery life, but for normal everyday use, I don’t really need more. I used to have one Magic Shine front light, 1000 lumens and it was alright but bulkier… I’m still a Knog fan.
I use it basically for long rides (the back light) always on, for 8 hours and it lasts all the way on eco mode, which is enough even for daylight. And the front light, maybe for 2 hours in the morning or 2 hours at night. I just love them.
best lights ever