Whistle electronic meteor 10147 & nbsp; whistle electronic meteor has universal application. Model is hygienic alternative for traditionally supported whistle & oacute; w. Whistle has 2 chambers sound and 2 2 type E sound up to selection. respectively designed construction protects against separation Dot; decibele: 125 db & middot; thickness: 3 cm & middot; height: 13.5 cm & middot; width: 3.5 cm & middot; large loud ć output with excellent sound effect & middot; battery in set: yes, CR2032 3 V & Middot; Evil oacute; Ż batteries /-as marked. Check sound. if not sound sound, check batteries. in in case needs adjust them gently pulling in in chamber battery.