it is a 30x30mm 10mm thick fan that operates at 5V voltage.
You can find such fans in some of the Raspberry PI development cards.
The manufacturer indicates the fan rotates at a speed of about 13 thousand rpm and can push about 5 m ^ 3 per hour. The noise level is 18db.
Could be the manufacturer will be different from that shown in the picture and current consumption can be slightly different, but in all cases the fan will be designed to 5V.
Length: 30 mm
Width: 30 mm
Height: 10 mm
Working voltage: 5V
Current: 200mA
Shipping Data (Explanation) :
Weight: 15 grams