I have an ASUS ROG PHONE 7 fan. The fan has a very, very strong built-in speaker, ماشاءالله تبارك الله (what God has willed, I praise God). I also have another fan for ASUS ROG PHONE 6 Or 6D It also has control buttons without any delay. Among its features is the ability to stabilize the phone for viewing and enjoyment. Usage is very simple. The purchase price was 899. Selling for 500. Reduced to 350 due to urgent need for money, والله (by God).