PROX MEGA AIR HP-2000 Mega Air PROX MEGA AIR HP-2000 Mega Air CODE NO. MAHP2000 Operation confirmed before listing. I have used it, but I am listing it because I haven't used it recently. There are scratches. Please check the photos. Thank you. Powerful air pump with a quiet "3VALVE" system Powerful air pump with approximately 2L/min at high speed. The "3VALVE" system reduces vibration and achieves quietness by arranging three pumps in one unit and operating them in sequence. A large stone is standard equipment, and fine bubbles quickly penetrate the water. Ideal for keeping live horse mackerel, decoy ayu, keeping fish, and ornamental fish. *There are individual differences in the way the bubbles come out. Be sure to soak the stone thoroughly in water before use. ■Product Name: Mega Air HP-2000 ■Product Code: MAHP2000 ■Batteries used: 2 x D-cell batteries (sold separately) ■Battery life (at 20°C) *When using alkaline batteries LOW (weak): Approximately 45 hours continuous HIGH (strong): Approximately 15 hours continuous ■Air volume *Initial battery value LOW (weak): 1.2L/min HIGH (strong): 2.0L/min ■Body size: Approximately W80 x D40 x H150mm ■Stone size: Approximately Diameter 80 x Height 16mm (excluding hose port) ■Hose length: Approximately 60cm ■Motor life: Approximately 700 hours ■Body weight: Approximately 200g (excluding stone and hose) ■Material: [Body] ABS, [Stone] Ceramic, [Hose] Silicone ■JAN: 4548992218486 ■Manufacturer: PROX ※Caution Due to the structure of the product, sand powder may come out from inside the stone. However, there is no problem with use. Please be careful not to swallow the sand powder.