Seven Master 2W/4W/8W Aquarium Air Pump Mini Silent Compressor Single Double Outlet Oxygen Pump Fish Tank Aquariums Accessories Features: Four air holes, adjustable air volume, mute Voltage: 220-240V, 50Hz (customizable) Power: 2W / 3W / 3.5W / 4W / 8W Air volume: 1.2L / min, 1.8L / min, 3.0L / min, 4.5L / min, 9L / min Payment Alipay, West Union, TT, all major credit cards are accepted through secure payment processor ESCROW; * For Received Value is less than order value, money may be draw backed and order closed, thus please pay enough value; * Please make payment in three days after order Shipment 1. Shipping method: DHL UPS FEDEX TNT EMS CHINA POST; Global ships (except some countries or special places); 2. If the mode of transportation buyers choose not to use (no flight, difficult to clear), we will contact and advise the buyer to choose other modes of delivery, if the buyer does not respond before delivery, we will send the most suitable according to the actual situation Courier; 3. ESCROW promptly processes orders after payment verification; 4. Service transfer time is provided by the carrier, excluding weekends and holidays; 5. During the Chinese holiday season, or when there are special circumstances, the shipping schedule may vary; 6. Please contact us. If you do not receive your shipment for a long time, we will reply to you as soon as possible. 7. We are not responsible for the reason that the buyer cannot receive the package because of the following reasons: * The purchaser refuses to fulfill the customs clearance obligation. Customs clearance must be resolved by the buyer. * The purchaser please ensure that the order address is correct; * Buyer doesn't pick up when arrive local carrier office, eg. Post Office * Express does not contact the buyer in time. Warranty and Return The following are our warranty notices for most items: 1. After receiving, you need to contact us for 7 days (except holidays) to confirm the return, and return 3 days after we confirm; 2.There is no reason to return or refund, freight (both parties) and additional costs will be on the buyer's account; 3. For defective or wrong products, please send us a clear picture. After we confirm, return or refund or replace; 4. Due to the lighting problem when photographing, there may be differences between photographs and physical objects.If mind of this, please think twice before placing orders; We will not accept such disputes; 5. All returned products must contain all components and accessories. The buyer must provide us with tracking number, order number, specific reasons, etc. 6. When we receive the above requested items. We will refund your full purchase price. Feedbacks 1. We will give buyer feedback after order finished; 2. We are aiming to offer best service to all buyers, and strive for 100% customer satisfaction buyer feedback and suggestion is very important to us and other buyers; 3. If satisfied with our products and service, please leave us positive feedback (Five Stars) as reward and enough;If not, please contact us before negative/neutral feedback, We will work with you until your total satisfaction.