The Polyend Play size and Weight are: Height 8 inch (20.7 cm) Width 11 inch (28.2 cm) Depth 1.8 inch (4.5 cm) Weight: 2.9 lbs / 1.3 kg (with accessories) 2.2 lbs / 1 kg (without accessories).
In terms of hardware, it's the exact same form factor as the Polyend Tracker. They look really nice together too!