Specifications: Input: 5V/2A, 9V/1.67A Output: 5W/7.5W/10W Charging efficiency: ≥ 93% Charging distance: ≤ 5mm Size: 89.6*11mm Fast Wireless Charger For iPhone X / 8 / 8 Plus and also compatible with other smartphone too. Compatible Devices for 5W, 7.5W and 10W Charging Models: 5W standard model: Using 5V,2A adapter Compatible with ALL Qi-enabled devices* iPhone X, iPhone 8, iPhone 8 Plus Samsung Galaxy S9,S9 Plus, Note8, S8, S8 Plus, Samsung S7, S7 Edge, Note 5, S6 Edge Plus Samsung S6, S6 Edge Google Nexus 6 / 4 / 5/ 7(2013) 7.5W charging model: Using QC2.0/QC3.0 adapter(9V,1.67A) iPhone X/iPhone 8/ iPhone 8 plus 10W fast charging model: Using QC2.0/QC3.0 adapter(9V,1.67A) is ONLY for Samsung Galaxy S9/ S9plus/ S8/ S8plus Samsung Galaxy S7/ S7 edge/ S6 edge plus/ Note 5 Other features Temperature Control Technology Exclusive Intelligent Protect Technology provides surge protection, short-circuit prevention, and more.