Power Source: R6P (AA) × 6 (9 V DC) or R6P (AA) × 4 (6 V DC) Rated Output: 6 W (when using six R6P batteries) Maximum Output: 10 W (when using six R6P batteries) Battery Life When using six R6P batteries (JEITA)(*1) Voice: Approx. 8 hours, Siren: Approx. 20 minutes When using four R6P batteries(*2) (JEITA)(*1) Voice: Approx. 5 hours, Siren: Approx. 10 minutes Audible Range: Voice: Approx. 250 m (JEITA)(*1), Siren: Approx. 315 m (JEITA)(*1) Signal Sound: Siren (sounds at 5 seconds intervals) Frequency Response: 450 - 6,000 Hz (SPL -20 dB) Magnetic Circuit: Neodymium magnet, inner magnet type Diaphragm: Polyimide film (voice coil, bobbin) Anti-bacteria Treatment: Mouth and handle Water Protection: IPX5 Operating Temperature: -10℃ to +40℃ Finish Horn: ASA resin, clear red Other: ASA resin, red Strap: Nylon, black