Product basic info Primary colours: Blue Additional colours: Grey Additional detailed colours: Metal, Silver Diameter unit: 34.2 mm Height unit: 61.5 mm Weight unit: 283 g Technical data Battery capacity: 16500 mAh Power supply Number of batteries: 2 Battery voltage rating: 1.5 V Battery composition: Alkaline Battery IEC size: D (LR20, R20, HR20, KR20, ZR20 ,13A, 13D, UM1, Mono, MN1300, MX1300) (EN)