The oxygen pump works with a USB cable from your power bank to increase oxygen for aquarium aeration. It is compact and lightweight， very convenient to carry.

Features:
Widely used to increase oxygen for aquarium aeration and outdoor fishing.
Work with USB cable from a power bank or computer， very convenient.
It is silent and will not disturb your sleep， work or the inhabitants in the aquarium.
Compact and mini design， lightweight to carry.

Specifications:
Material: ABS
Size: 8.5 * 5.5cm / 3.3 * 2.2in
Weight: 107g / 3.8oz
Package Size: 11 * 9 * 4.9cm / 4.3 * 3.5 * 1.9in
Package Weight: 180g / 6.3oz