Teissuly Clearance USB Two Uses Solar Oxygen Pump Large Capacity Outdoor Portable Household Fish Pond Oxygenator Best Gift

Teissuly Clearance USB Two Uses Solar Oxygen Pump Large Capacity Outdoor Portable Household Fish Pond Oxygenator Best Gift Features: aquarium and hydroponic plants! Button to start the oxygen pump. Repeatedly press the Button to select different working modes. This product is a solar product. The charging speed is Working mode: Working indication: Battery voltage 3.0V-3.6V, red light is on when working; battery voltage 3.6V-4.2V, blue light is on when working; no light is on when shut down.