jamsil lotte department store jamsil digital treviewbasic information Installation location Lotte Department Store Jamsil Branch Trevi Square Operating hours 08: 00 23: 00 (15 hours) standard 3. 7 x 2. 1 m 7. 3 x 2. 1 m 7. 3 x 2. 1 m number of seconds 20 seconds audio Yes (audio inserted in ) Number of broadcasts 140 times day *Detailed broadcast times (from XX minutes every hour) cannot be confirmed in advance. Publication period From the 15th Sending broadcast photos can be *If the broadcast starts