Approx. 1/2mm thick. Nice and thin and stretchy too. Well suited for this purpose :-) Anyone expecting a "thick" cloth will be disappointed, because these cloths are thin. But that's not a disadvantage, but an advantage, because it makes it easy to reach the edge of your glasses or behind your nose bridge to clean. 

The cloth is very thin and has enough space between the keyboard and the screen. It even protects the screen a little because the keys don't touch the screen. 

Cell phone or desktop programming for this device is very limited. It's only used to set your WIFI connection and accounts for uploading your data to the Cloud sites. 

No, there is no tracking app for that. Just connect it to the Bluetooth configuration. 

Could you please update us your full Minolta lens model ?as Minolta has MD MC and AF mount, K&F Concept MD-M4/3 is suitable for: Lens: Minolta MD MC Mount lens(not for Minolta AF mount: KF06.157) Camera: Micro 4/3 (MFT) mount mirrorless camera like Olympus PEN, OM-D series, Panasonic Lumix DMC-G1, G2, G3, G10, GX1, GH1, GH2, GF1, GF2, GF3, GF5, GH4, Panasonic AG-AF100 Mirrorless Digital Cameras, Black Magic Pocket Cinema Camera (BMPCC)