Hapyson Air Pump Marker Warranty Included YH-750 Battery-Powered (with Function) - 3-Year Manufacturer's

Power source: Battery operated (uses 2 x D-size batteries) / Motor life: Approximately 300 hours Continuous operating time (approximate airflow) when using alkaline batteries: High setting: approx. 4 hours (approx. 2.3 L/min), Low setting: approx. 45 hours (approx. 0.7 L/min) Body size: Approx. 80 x 40 x 150 mm / Weight: Approx. 480 g (including battery, excluding stone) Features: Quiet design, rolling pump, ceramic stone included (microbubble oxygen supply), high/low speed switch, LED indicator, washable. 3-year manufacturer's warranty (proof of purchase required; see manufacturer's website for details) / Part number: [YH-750]...Includes maximum airflow, operation LED marker, and ceramic stone.