Specification: Colour: Black & White Charging power: up to 5W Conversion efficiency: greater than 73% Indicator function: blue light indicates charging, red light indicates standby, double light flash indicates fault. Product size: diameter 10cm, thickness 1cm Cable Length: 50 cm. ☆ Devices with built-in wireless charging receiver(Nexus 4/Nexus 5/Nexus 6,Nokia 9kia Lumia 920/1020/928/Lumia 950xl /950,Huawei Mate 10, HTC Droid DNA and more) ☆ Devices with reserved wireless charging interface beside it battery (Galaxy Note 8, Galaxy S7/S7 Edge, Galaxy S6/S6 Edge, Galaxy S8,Galaxy S8 Plus（can only support standard charging speed) etc.) ☆ Devices with wireless charging receiver in its protection case(iPhone 8/8 Plus, iPhone X etc.) ☆ Device need extra receiver charger (not included): iPhone 7/7P/6P/6/6S/5/5S/5C/5SE/ LG Optimus Vu2/LG G2/LG G4 Galaxy S5/S4/S3/Galaxy Note 4/3(not Verizon version)/2. Nokia Lumia 820,Blackberry Z30 Verizon. Using Introductions: 1) Insert one end of USB charging cable into power adaptor or computer. 2) Insert another end of USB charging into Micro USB port of the wireless charger, the wireless charging pad LED indicator lights up to indicate well connectivity. 3) Place your phone on the wireless charger, make sure that the phone is well located at the charging area of wireless charger, when phone is being charged, the led indicator will light up automatically to show charging status. Note: ☆ Remove protective cases to ensure effective charging. ☆ Order don’t include Qi Receiver ☆ If you have any questions before your purchase, you can always contact us, we will provide you with the fastest and most satisfactory answer.