2 In 1 Bundle Offer, Magic MX6 Smartphone with 4G, Android 7.0 (Marshmallow), 5.0 Inch HD LCD Display, 4GB RAM, 32GB Storage, Dual Camera, Dual SIM, Bluetooth Stereo Headset with Micro SD
Hardware modification] Marshmallow supports adopting microsd cards as internal storage, but nexus devices rarely have a slot. So I added some. : r/Android
Help: SD Cards In Android 6 (Marshmallow)
Use Micro SD card as Internal Storage on Android 6 Marshmallow || Adoptable Storage - YouTube