Compliant, import

(See my video of unboxing on the tube in the ref or 0s2J12jZrfk. "Unboxing - DeLUX M618 Wireless")
The packaging is Chinese but is totally plug'n'play and installation is automatic, so there is no need for manual too.
This mouse (probably still a bit expensive) is not perfect, but probably the best on the market at the moment!
Delivered with 2 batteries (AAA) and micro-USB éméteur at 2.4GHz (worn 10 meters), there is a small on / off switch underneath, and a location to store the USB transmitter. There are also some "wrist rest" which can be removed if necessary.
Everything is a bit big (but not heavy) and if there are undeniably gaining in comfort, you will lose your bearings and precision (at first): a small adjustment period is necessary. It is also a pity that the DPI button on the top can not be programmed (for FPS, it would have been fine!).