UVa II, E49
The protection for the precious Summilux 28mm f/1.7 lens.
SanDisk SD card
Leica staff recommends SanDisk. Seems to work well with Leica camera. I bought two 64GB.
Artisan & Artist Strap
The black leather strap comes with Q2 may damage the body. So I bought 98cm black Artisan & Artist Strap (Made in Japan).