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.
UHS-II
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).
Battery model
BP-SCL4. 1860 mAh. Same as SL2, SL2-S. Serial number 16062
Charger
Typ601 Serial number 16062.