great product, fast shipping
I got the m200, difference between m200 and 3500, is the. way to insert batteries, m200 is open below n 3500 is open on top. Its really look very nice. Has 3 modes, bt 4.0 & 3.0 and dongle on 2.4g. The clicks are really very soft. Sealed and brand new but the seal sticker seems to open/tampered with before :( else its a 6star for this