Good tail light. Light is focused so that it is day light visible. There are not so many day light visible light in the market. The main advantage of the light is dual LED. It looks awesome in the night when the main LED remains steady and the bottom facing LED blinks. It have brake light senor which I do not find it needful as the dual LED is enough to grab attention. Brake sensor drains battery too. It does come with saddle mount.
One negative is the battery run time. All the modes are 140 lumen modes which is visible in daylight. They could include few low lumen mode for night time rides.
I am very happy with that service
It's one of the best tail lights I've owned. It's really powerful. One of the best features I like about it is that it has a light sensor. so it turns bright when you are cycling through underpasses (which are very common in Bangalore). The battery life is pretty good. I don't need to charge the battery until 2-3 rides which is great.
There are tons of different modes and setting the right mode takes a little effort but once you've set the mode of your choice it remembers that setting and you don't really need to fiddle with it anymore. I would highly recommend this product.