Robust yet silent two hydro bearing fans powered by USB port., Compact, foldable and easy to carry - use it any way you want it., Suitable for 7-17" laptops - Adjustable auto-locking joints with 360 degree roatiation., No need to contact manufacturer - Pwr+ provides warranty and customer oriented product support: 30 Days Money Back Guarantee / 18 Months - Exchange and Spare Parts / Please contact us with any questions or concerns - we are here to help (Phone service is available), Products trademarked Pwr+? are marketed and sold exclusively by Pwr+. We focus on providing quality power products and excellent customer service ... and we also ship your order the same or next day (Amazon order processing time varries)