Sobo SB-3000 AC/DC Aquarium Fish Tank Air Pump | Power : 2.8W | Flow: 2x3L/Min

1.Setting Up Plug the pump into a power supply and charge the battery. Note that if the pump is switched of whilst charging, the charge time will be faster by up to 4 hours. Option 1: Pushing the button once activates a light which produces strong air output for up to 12 hours. Option 2: Pushing the button 5 seconds a light which produces a slower air flow which automatically shuts on and off every 30 seconds, making the battery last even longer, over 25 hours, for those critical moments 2. Choose Your Setting When the green light is working that the pump into the DC supply, the red light is working that the pump into the AC supply. 3.Smart Battery Protection Unit The battery will never entirely discharge all of its energy This unique feature ensures that the battery unit is always at an optimum condition 4. Automatic Recharging System. The pump will automatically recharge itself once it is low on power.