ER-520W (10W max.) โทรโข่งแบบมือถือ ขนาด 10 วัตต์ + นกหวีด (เมกกะโฟน) Compact Hand Grip Type Megaphones with Whistle Small in size and light in weight, the ER-520W megaphone can be easily carried by a single hand. It can also provide a whistle tone. Handle and microphone with anti-bacteria treatment improve hygiene and safety during use. The newly developed polyimide diaphragm is employed to ensure high sound quality. ER-1015 Spec. Power Requirements R6P (AA) × 8 (12V DC) Output Power Rated 6W, max. 10W Battery Life Voice: Approx. 10 hrs. (EIAJ)*1 Whistle: Approx. 30 min. (EIAJ)*1 Audible Range Voice: Approx. 250m (EIAJ) Whistle: Approx. 315m (EIAJ) Diaphragm Polymide film (voice coil, bobbin) Antibacterial Treatment Mouth and handle Operating Temperature -0ºC to +40ºC Finish Horn: ABSA resin, light gray Other: ABS resin, gray Strap: Nylon, black Dimensions (W × H × L) 160 × 256 × 260mm Weight 650g (without batteries)