Item Type: Increasing Oxygen Pump Material: ABS Weight: 402g/14.18oz Color: As Shown Battery: 18650 Lithium Ion Battery, 3.7V, 3600mah (Delivered with Built In Battery) Adapter Input: DC 5V, 1A Maximum Air Volume: 1L/min Charging Method: USB Charging (1A Charging) Charging Time: 5H Working Mode and Working Time in Full Battery: 1: High Grade, Working Time in Full Battery: 24H 2: Mediate Grade, Working Time in Full Battery: 48H 3: Low Grade, Start 10 Seconds Stop 10 Seconds, Working Time in Full Battery: 96H 4: Turn It Off Charging Indicator: 5 Indicators Light Up One by One when Charging If the Battery is Fully Charged, the Indicator is Steady On Air Pumping Indicator: 5 Indicators Show the Remaining Battery when Pumping the Last LED Light Blinks when the Battery is Low1Premium Material: Made of premium ABS, the increasing oxygen pump is sturdy, durable, reliable, practical and has a long service life. 2Portable: The rechargeable aerator pump occupies little space, it is convenient for users to carry and take, can save energy. 3Multiple Protection: The 3.7V 3600mah air pump has overcharge protection, over discharge protection, low battery alarm, safe to use. 4Wide Application: The portable aerator pump is suitable for ornamental fish, aquarium, perfect for office, home and other places, especially suitable for power outage emergency and outdoor fishing. 5USB Rechargeable: The portable fish aerator supports USB charging, only need 5 hours for fully charged, 5 indicators light up one by one when charging. 1 x Increasing Oxygen Pump 1 x Hose&nbsp 1 x Connecting Line&nbsp 2 x Air Stone&nbsp 1 x Accessory&nbsp