Warning alert fx for user interface devices, sound for operation systems, PC, games, phones, iPads, programs, modern softwares, tests, etc. The sound effect is also suitable for errors, failures, gated access, bans, warnings, wrong answer. 6 versions MP3 and WAV separately in the zip! 1: 00:02, 2: 00:02, 3: 00:05, 4: 00:01, 5: 00:01, 6: 00:01