Two Wireless + One USB Fast non-slip Ultra Slim wireless charger for Qi-enabled phones charging simultaneously with 5w fast charge technology using wall outlet. Chargers single device with the USB charging port. Charges Samsung phones and iPhones. Advanced Safety Protection Exclusive Multi-functional Intelligent Protect Technology provides temperature control, surge protection, short-circuit prevention, and more. 0.31 in thickness design plus intelligent temperature control system ensure cooler but more efficient charging. Premium copper coil makes the charge safer and has a good heat dissipation.Dual charge functions only when using an AC adapter cube/block & plugged into an AC outlet.