The adapter is new, top of the line quality.
Achieve Contrast Focus for Sony A7II / A6300, and later NEX new models, make their focusing speedy and accuracy nearly equal to DSLR.
Can achieve macro shooting in a degree by lens focusing.
Can make other lens achieve auto focus with Leicaist LR-LM, EOS-LM, AI-LM, etc.
Focus motor increased, easier focusing for big lenses.
Firmware upgrades into V03, can input 10 lens information by smart phone APP, can use camera aperture + shutter release choose
Lens information: can input 10 lens information by smart phone APP
Adapter telescopic distance: about 4.5mm
Focus mode: Single focus for AF-S, continuous focus for AF-C
Support lens weight: 700g ( suggest using tripod mount ring or hold by hand when the lens is exceed 700g)
Wireless control: Bluetooth, supports Android and iOS
Adapter Weight: 133g
Size: 80mm * 64mm
1. Put red marks of the adapter and lens collar together.
2. Turn the adapter anticlockwise till the fixative click.
3. Set M mount lens.
To remove the adapter you should turn the adapter clockwise.
Lens: all Leica M series lenses, Zeiss M, Voigltander M lens, and other M mount lens by exchange connector )
Cameras: Sony A7RII, A7II, A6300, and so on.
Please refer http://techartpro.com for firmware update.