A5=Overall size: 150*240mm Working size: 149*210mm
A4=Overall size: 233*335mm Working size: 233*310mm

Thickness: 3.5mm
Interface: USB
Voltage: 5V
Power: 1.5W
Color temperature: 8900k
Material: acrylic

A5 1: non adjustable + dedicated USB cable (self provided power supply)
A5 2: stepless dimming + special USB cable (self provided power supply)
A5 3: three gear dimming + special USB cable (self provided power supply)
A5 4: dimming + special USB cable + original power distribution