Alldocube X with Slimmest design.
Thickness
Alldocube X: 6.4mm
Samsung Galaxy Tab S4: 7.1mm
Teclast Master T10: 7.5mm
Chuwi Hi9 Air: 8.4mm
Weight
Samsung Galaxy Tab S4:483 grams
Alldocube X: 500 grams
Teclast Master T10: 550 grams
Chuwi Hi9 Air: 560 grams