Very good pair of wireless headphones

Received today, I'll try to let my feelings.
The seller Very good seller, ordered before yesterday around 22h. Arrived at 12am today! I am impressed with the speed of delivery.
Product: Taken in orange-white, the headphones have a great look. They are packed in a carton comprising the foam. Located beneath the foam, there are the accessories: 3 pairs of tips (including one already on the headphones), 3 pairs of fins to a better stability, the USB cable to recharge the filling and manual instruction.
Are headphones efficient? The sound is not too bad, it is true that it might be better this side but for the price charged (27.99) I think we can do better. Do not forget the handsfree function which I have absolutely no complaints there.
Regarding autonomy, I did not fully discharged (3 hours listening today). The logo on the side also serves as an indication when you load your headphones.
For placement in the ear, I have sought the right combination and in the end it is left in the ear (They fell once during my cardio so it's reasonable).
Small negative in my opinion: The fins are black while all orange-white. But I quibble;)

PS: I left some pictures, since there is none of that color.