I bought it when it was released.
Let me tell you that I was bleuffé (FYI j'atait went to bought the little brother to Dual dynamo)
Very reliable, good brightness and good response to music.
Only black spot, I abligé Atashez of 2 slings in a normal security, the second between the porch and the handle located above the Dual as the mounting bracket is not suitable for the weight of the device.
Otherwise nothing to say
2 Scan 1 is the top.