Solar powered, no battery or electricity needed, energy saving and environmentally friendly. Made of high quality and durable ABS material. 100 degree foldable solar panel, easy to adjust a better angle to absorb solar energy. Built-in 2200mAh high capacity battery, it can work long time up to 20 hours once fully charged, meanwhile, this air pump can be charged by DC power with a USB cable. The Internal circuit adopts imported single-chip microcomputer intelligent control, supports constant pressure and constant current charging, overcharge discharge protection and low electric alarm, safe to use. Description: This is a high quality aquarium oxygen fish air pump. Made of high quality ABS material and durable to use. Powerful, high efficiency pumps meet most aquarium air needs and are designed to ensure years of reliable, trouble-free use. Rubber stabilizing feet and technologically advanced design provide smooth, quiet operation. Perfect air pump for adding water movement and oxygen to aquarium to improve water health and give your fish a comfortable environment. Specification: Condition: Brand New Type: DC Air Pump Material: ABS Color: white Battery: 3.7V 2200mAh 18650 battery (included) Rated voltage: 1.8V Maximum current: 150MA dB: 50 dB Minimum air: 0.3L/min Working hour: 20 hours (fully charged) Solar panel: 5V/1.45W Indicator light: Green light flashing slowly: working Red light flashing: charging Red light: fully charged Air mouth diameter: 4.4mm (the outer air mouth is 5.1mm Size: 13 x 8 x 4.2cm/5.12 x 3.15 x 1.65inch (Approx.) Package Included: 1 x Aquarium Air Pump 1 x Belt Buckle 1 x DC Charging Cable 1 x Valve (30cm) 2 x Tubes (1m) 2 x Bubble Stones 1 x Straight Connector 1 x User Manual