This fan is 120mm. It shows the temperature, fan speed, and the word of cool/warm/hot with some LEDs on the rotating fan assembly. It is made by bgears.

Dimensions:	120 x 120 x 25mm	Air Flow:	49+/-10% CFM
Speed:	1700+/-10% RPM	Noise:	29.5+/-10% dBA
Power:	4.8W	Current:	0.4A

Features:

• Stylish Temperature, Fan Speed, Word of Cool/Warm/Hot Display
• Temperature display up to 1 decimal point accuracy
• Word display cool/warm/hot alert when temperature rises
• Cool blue background light with striking red wording display
• Excellent airflow with low noise level
• Includes a 3-pin to 4-pin adapter

Specifications:

• Dimensions: 120 x 120 x 25mm
• Rated Voltage: 12VDC
• Operating Voltage: 7.0~13.8VDC
• Air Flow: 49+/-10%
• Speed: 1700+/-10%
• Noise: 29.5+/-10%dBA
• Input Current: 0.4A
• Input Power: 4.8W
• Air Pressure: 1.6+/-10%
• Starting Voltage: 7VDC