Model Number:Yunxwdqo45gsmfrk Item Weight:640 g Delivery information::We cannot deliver certain products outside mainland UK ( Details). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. Specification:Item type: Solar Increasing Oxygen Pump Condition: 100% brand new Material: ABS + acrylic Weight: Approx. 636g Color: As picture shown Voltage: 1.5w Lithium battery model:18650 Capacity:3600 mAH Air Flow: 0.5L/ min-0.9L/ min Product operating voltage:3-4.25V Charging mode: Mode 1: solar panel charging and charging time: 15H Mode 2: USB charging (1A charging time): 5H Charging Indicator: In charging process, LED run-of-the-stream indicator is charged. After filling,5 LED are fully bright. 3-gear adjustment: 1 gear, press after boot: high speed (available 24 hours) 2 gears, press 2 down after boot: low speed (available 48 hours) 3 gear, press 3 after boot: air pump 10 seconds, cycle off 10 seconds (available 96 hours) 4 gear, press 4 after boot: turn off Charging indicator light: when charging, five lights will be on one by one; when the battery is full, the indicator light will always be on Operation method: Place the solar panel in a light-filled place to ensure that the sun is shining;Connect the air stone to the main engine before it falls into the water;Press the switch button, the built-in lithium battery has electricity after the air pump works, again press the button to select the air pump stall mode. Package List:1 x Increasing Oxygen Pump1 x Solar panel1 x Air tube2 x Air stone1 x Three links1 x USB cable1 x Instruction Note:1. This product is an electronic product. The oxygen-increasing part can't be put into water and the diversion hole can't be blocked.2. This product is a solar energy product, charging speed is related to the strength of sunlight, regularly cleaning the dirt on the solar cells to improve the charging efficiency. AC/DC oxygen pump, using copper movement, built-in high-quality lithium battery, cycle life up to 500 times. With small size, low noise, large air volume, durable for use. Full power can be used continuously for 24 hours. Adopts advanced single-chip intelligent control, constant voltage/current charging, over charge and over discharge protection, low battery alarm, safe to use. Widely used in a variety of ornamental fish, aquariums, fish lovers, companies aquarium fish tank, domestic fish fish increase oxygen. Especially great for power outage emergency, as well as oxygen pump for wild fishing. Easy to install, no wiring. AC/DC oxygen pump, using copper movement, built-in high-quality lithium battery, cycle life up to 500 times. With small size, low noise, large air volume, durable for use. Full power can be used continuously for 24 hours. Adopts advanced single-chip intelligent control, constant voltage/current charging, over charge and over discharge protection, low battery alarm, safe to use. Widely used in a variety of ornamental fish, aquariums, fish lovers, companies aquarium fish tank, domestic fish fish increase oxygen. Especially great for power outage emergency, as well as oxygen pump for wild fishing. Easy to install, no wiring.