In addition to the benefits of Diners Club, you can enjoy a high-quality preferential treatment program, including access to a 24-hour concierge, automatic domestic and international travel insurance up to 100 million yen, and free use of airport lounges in Japan and abroad. You can also issue a “TRUST CLUB World Elite Card” as a companion card with no annual fee, and by presenting the card, you can use the airport lounge service “Lounge Key” and other services such as Mastercard Taste of Premium. In addition, you can transfer mileage points to five major airlines without annual participation fees.