Sony Xperia Z Ultra has a 6.4″ full HD display. The device is powered by a quad core 2.2GHz Qualcomm processor, Adreno 330 GPU, 2GB RAM and LTE connectivity. It is IP58 certified, meaning it is dust and water proof, and water resistant to 1 meter or 30 minutes. It features an 8MP camera, 16GB of internal storage and it runs on a large 3050mAh battery.
CyanogenMod team are working on providing the latest Android 5.1 update to many devices via the CM 12.1 custom ROM. The most recent device to get the CM 12.1 ROM is the Sony Xperia Z Ultra. Follow the guide below to install CM 12.1 on the Z Ultra.