Feature●Product Size: Approx. 1.8 inches (46 mm)●Package Size (H x W x D): 7.1 x 3.1 x 1.5 inches (180 x 80 x●Material: ABS, epoxy resin, metal●[Product specifications] Output volume: Approx. 85 dB (at 3.3 ft (1 m) forward); Continuous blowing time: Approx. 20 minutes (uses VINNIC CR2032 type batteries, test temperature 67°F (25°C)); Battery: CR2032 type x 2Description