Ruth's sister Semiconductor Phone Cooler Type-C 9000rpm 66-87mm 15.5cm

What this product is and who it's for

The Ruth's sister Phone Cooler uses semiconductor cooling technology to lower phone temperature during intensive tasks such as gaming, live broadcasting, video playback or charging. It fits phones from 4 to 6.7 inches with a thickness of 5.5 to 10.8 mm, and the retractable grip spans 66 to 87 mm. The device draws about 5 W from a 5 V Type-C input and measures 15.5 cm by 8 cm by 3 cm. It is built for users who need sustained performance without thermal throttling.

Thermals, noise and power draw

A high-speed fan rated at about 9000 rpm moves heat away from the semiconductor cold plate, while the supplier describes the unit as low noise in normal operation. Power consumption is approximately 5 W at 5 V, supplied through the Type-C port, so it can run from a standard phone charger or power bank. The aluminium and ABS resin construction helps dissipate heat without adding bulk.

What this replaces and when the jump is worth it

This cooler replaces passive heat dissipation or basic clip-on fans that rely only on airflow. The semiconductor element actively pumps heat from the phone body, making the upgrade worthwhile when extended sessions cause throttling, battery drain or discomfort from a hot chassis. It is not suited for phones thicker than 10.8 mm with a case fitted, or for devices outside the 4 to 6.7 inch screen range.