Generate white noise within 8-22 Khz to repel mosquitoes. Switch between frequencies or use automatic mode. Set a timer up to 1 hour for automatic shutdown. Requires phone volume to be on for proper function.
Enlarge and display characters for detailed study. Select from Gothic or Mincho fonts and view stroke order. Access full-screen mode with horizontal scaling. Use Wiktionary to check pronunciation, kun readings, and meanings.
Control a personal sound amplifier with BLE technology. Adjust volume and toggle automatic noise cancellation, adaptive feedback cancellation, and background noise reduction. Set up to two modes based on environment.
