The ear pockets of the new Quantum-ST PRO models have molded pockets for speakers providing a more comfortable fit.
QUANTUM-ST PRO / CHASER-V PRO
The Arai limited Warranty and after-sales services are offered exclusively to customers in possession of Arai helmets sold through an authorized Arai retailer. Any Arai helmet offered for sale by a non-authorized dealer (particularly over the Internet) may be counterfeit or may be stolen or defective. Therefore Arai declines all responsibility.