As seen from the video, the Xiaomi Max phablet will not have any physical buttons, unlike the flagship Mi5. The back of the phone will also feature a fingerprint sensor and will be made from a metallic material.
Based on previous leaked information, the Xiaomi Max is said to have a large 6.44 inch 1080p screen. It will feature the Snapdragon 650 processor, 4500mAh battery, and supports dual-SIM and full 4G LTE network capabilities. The Xiaomi Max is rumoured to be released at 1299RMB (285SGD).
The video can be viewed here http://www.miaopai.com/show/A05O5OokPL2L9nidCTR4aA__.htm