Coverage of the Gulf of Thailand to the Yellow Sea between China and Korea. It covers Gulf of Thailand, coastal areas along Bangkok, Chumphon, Kampot and Chanthaburi. It also covers Ho Chi Minh, Quy Nho, A Nang and Hai Phong in Vietnam, Sanya, Haikou, Shankon, Xuwen, Zhangjang, Macao, Hong Kong, Ezhou Island and Xiamen in China. Coastal areas along Kaoshang to Taipei of Taiwan are also covered. The other areas covered are Sakishina, Myako-Retto, Naha, O-Shima, Kagoshima, Miyakonojo, yatsushiro, Sasebo, Fukuoka and Tsushima in Japan. The Yellow Sea coverage includes An Ong and Alian in North Korea, Pusan, Chinju, Cheju, Kwangyu, Gunsan, Seoul and Nampo in South Korea. It also covers Yingkou, Jinxi, Tianjin, Yantai, Qing Ao, Shanghai, Zhoushan, Fuzhou and Quanzhou in China.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.