DSEI Japan 2025 is a business conference and exhibition focused on the military and defence sector, with a unique emphasis on business culture and etiquette in Japan. The event is geared towards international business teams, particularly those working in the military and defence sector, who wish to establish successful business relations in Japan. The conference and exhibition aim to provide a platform for participants to learn about and navigate the intricacies of Japanese business culture and etiquette.

The event features a comprehensive program of presentations, panel discussions, and networking opportunities, with a lineup of prominent speakers from the Japanese government, defence industry, and international companies. Topics covered will include business card etiquette, greetings, dress code, punctuality, bowing, gift-giving, communication style, meetings, business meals, and group harmony and consensus building.

The conference and exhibition will be held in a format that allows for face-to-face meetings, live demonstrations, and product showcases, providing attendees with a unique opportunity to establish relationships, explore partnerships, and stay up-to-date with the latest developments in the industry. The event is expected to attract a diverse range of attendees, including defence industry professionals, government officials, and international business leaders.

Supporting organizations include the Japanese Ministry of Defence, Ministry of Foreign Affairs, and various defence and technology companies. Attendees from previous editions of the event have praised the event for its organization, networking opportunities, and exposure to the latest military equipment and technology.