Strong air pressure, sufficient oxygen, easy to use.Ultra-long battery life of 70 hours, no longer worry about fish lack of oxygen when fishing outdoors.Bedroom-level quietness of about 28 decibels, not disturb your quiet life.Ultra-long battery life, usually charge , just use an ordinary USB charger. If you go out fishing or long-distance transportation, use a 10000 mAh power bank to charge, and the battery life be quadrupled.Due to different product batches, the appearance and accessories , which not affect the useColour:As ShownMaterial:Plastics + ElectronicsPackage Contents:1 set x Rechargeable oxygen pumpOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.